Renamed most C files to C++: *.c to *.cc

Also:
 - Fixed C++ related compilation errors.
 - Added missing 'extern "C"' guards in some of the header files.
 - Added missing LOCAL_CPP_EXTENSION to Android.mk files.
 - Added-back btif/src/btif_mce.cc and bta/mce/bta_mce_* to
   btif/Android.mk and bta/Android.mk respectively.
 - Fixed the alphabetical ordering of the *.cc files in some
   of the Android.mk files.
 - Added missing Copyright header to "osi/include/list.h"
 - Updated "osi/src/wakelock.cc" to use C++ std::string
   instead of dynamic allocation of C-style strings.

Test: code compilation, unit tests, and A2DP streaming
Change-Id: Ia2f7215ed9df32775c701b68fc86b09875b942c7
diff --git a/main/bte_main.cc b/main/bte_main.cc
new file mode 100644
index 0000000..4705756
--- /dev/null
+++ b/main/bte_main.cc
@@ -0,0 +1,268 @@
+/******************************************************************************
+ *
+ *  Copyright (C) 2009-2012 Broadcom Corporation
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at:
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ ******************************************************************************/
+
+/******************************************************************************
+ *
+ *  Filename:      bte_main.cc
+ *
+ *  Description:   Contains BTE core stack initialization and shutdown code
+ *
+ ******************************************************************************/
+
+#define LOG_TAG "bt_main"
+
+#include <assert.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include <hardware/bluetooth.h>
+
+#include "bt_hci_bdroid.h"
+#include "bt_utils.h"
+#include "bta_api.h"
+#include "btcore/include/module.h"
+#include "bte.h"
+#include "btif_common.h"
+#include "btsnoop.h"
+#include "btu.h"
+#include "bt_common.h"
+#include "device/include/interop.h"
+#include "hci_layer.h"
+#include "hcimsgs.h"
+#include "osi/include/alarm.h"
+#include "osi/include/fixed_queue.h"
+#include "osi/include/future.h"
+#include "osi/include/log.h"
+#include "osi/include/osi.h"
+#include "osi/include/thread.h"
+#include "stack_config.h"
+
+/*******************************************************************************
+**  Constants & Macros
+*******************************************************************************/
+
+/* Run-time configuration file for BLE*/
+#ifndef BTE_BLE_STACK_CONF_FILE
+// TODO(armansito): Find a better way than searching by a hardcoded path.
+#if defined(OS_GENERIC)
+#define BTE_BLE_STACK_CONF_FILE "ble_stack.conf"
+#else  // !defined(OS_GENERIC)
+#define BTE_BLE_STACK_CONF_FILE "/etc/bluetooth/ble_stack.conf"
+#endif  // defined(OS_GENERIC)
+#endif  // BT_BLE_STACK_CONF_FILE
+
+/******************************************************************************
+**  Variables
+******************************************************************************/
+
+/*******************************************************************************
+**  Static variables
+*******************************************************************************/
+static const hci_t *hci;
+
+/*******************************************************************************
+**  Static functions
+*******************************************************************************/
+
+/*******************************************************************************
+**  Externs
+*******************************************************************************/
+fixed_queue_t *btu_hci_msg_queue;
+
+/******************************************************************************
+**
+** Function         bte_main_boot_entry
+**
+** Description      BTE MAIN API - Entry point for BTE chip/stack initialization
+**
+** Returns          None
+**
+******************************************************************************/
+void bte_main_boot_entry(void)
+{
+    module_init(get_module(INTEROP_MODULE));
+
+    hci = hci_layer_get_interface();
+    if (!hci)
+      LOG_ERROR(LOG_TAG, "%s could not get hci layer interface.", __func__);
+
+    btu_hci_msg_queue = fixed_queue_new(SIZE_MAX);
+    if (btu_hci_msg_queue == NULL) {
+      LOG_ERROR(LOG_TAG, "%s unable to allocate hci message queue.", __func__);
+      return;
+    }
+
+    data_dispatcher_register_default(hci->event_dispatcher, btu_hci_msg_queue);
+    hci->set_data_queue(btu_hci_msg_queue);
+
+    module_init(get_module(STACK_CONFIG_MODULE));
+}
+
+/******************************************************************************
+**
+** Function         bte_main_cleanup
+**
+** Description      BTE MAIN API - Cleanup code for BTE chip/stack
+**
+** Returns          None
+**
+******************************************************************************/
+void bte_main_cleanup()
+{
+    data_dispatcher_register_default(hci_layer_get_interface()->event_dispatcher, NULL);
+    hci->set_data_queue(NULL);
+    fixed_queue_free(btu_hci_msg_queue, NULL);
+
+    btu_hci_msg_queue = NULL;
+
+    module_clean_up(get_module(STACK_CONFIG_MODULE));
+
+    module_clean_up(get_module(INTEROP_MODULE));
+}
+
+/******************************************************************************
+**
+** Function         bte_main_enable
+**
+** Description      BTE MAIN API - Creates all the BTE tasks. Should be called
+**                  part of the Bluetooth stack enable sequence
+**
+** Returns          None
+**
+******************************************************************************/
+void bte_main_enable()
+{
+    APPL_TRACE_DEBUG("%s", __func__);
+
+    module_start_up(get_module(BTSNOOP_MODULE));
+    module_start_up(get_module(HCI_MODULE));
+
+    BTU_StartUp();
+}
+
+/******************************************************************************
+**
+** Function         bte_main_disable
+**
+** Description      BTE MAIN API - Destroys all the BTE tasks. Should be called
+**                  part of the Bluetooth stack disable sequence
+**
+** Returns          None
+**
+******************************************************************************/
+void bte_main_disable(void)
+{
+    APPL_TRACE_DEBUG("%s", __func__);
+
+    module_shut_down(get_module(HCI_MODULE));
+    module_shut_down(get_module(BTSNOOP_MODULE));
+
+    BTU_ShutDown();
+}
+
+/******************************************************************************
+**
+** Function         bte_main_postload_cfg
+**
+** Description      BTE MAIN API - Stack postload configuration
+**
+** Returns          None
+**
+******************************************************************************/
+void bte_main_postload_cfg(void)
+{
+    hci->do_postload();
+}
+
+#if (HCILP_INCLUDED == TRUE)
+/******************************************************************************
+**
+** Function         bte_main_enable_lpm
+**
+** Description      BTE MAIN API - Enable/Disable low power mode operation
+**
+** Returns          None
+**
+******************************************************************************/
+void bte_main_enable_lpm(bool enable)
+{
+    hci->send_low_power_command(enable ? LPM_ENABLE : LPM_DISABLE);
+}
+
+/******************************************************************************
+**
+** Function         bte_main_lpm_allow_bt_device_sleep
+**
+** Description      BTE MAIN API - Allow the BT controller to go to sleep
+**
+** Returns          None
+**
+******************************************************************************/
+void bte_main_lpm_allow_bt_device_sleep()
+{
+    hci->send_low_power_command(LPM_WAKE_DEASSERT);
+}
+
+/******************************************************************************
+**
+** Function         bte_main_lpm_wake_bt_device
+**
+** Description      BTE MAIN API - Wake BT controller up if it is in sleep mode
+**
+** Returns          None
+**
+******************************************************************************/
+void bte_main_lpm_wake_bt_device()
+{
+    hci->send_low_power_command(LPM_WAKE_ASSERT);
+}
+#endif  // HCILP_INCLUDED
+
+/******************************************************************************
+**
+** Function         bte_main_hci_send
+**
+** Description      BTE MAIN API - This function is called by the upper stack to
+**                  send an HCI message. The function displays a protocol trace
+**                  message (if enabled), and then calls the 'transmit' function
+**                  associated with the currently selected HCI transport
+**
+** Returns          None
+**
+******************************************************************************/
+void bte_main_hci_send (BT_HDR *p_msg, uint16_t event)
+{
+    uint16_t sub_event = event & BT_SUB_EVT_MASK;  /* local controller ID */
+
+    p_msg->event = event;
+
+
+    if((sub_event == LOCAL_BR_EDR_CONTROLLER_ID) || \
+       (sub_event == LOCAL_BLE_CONTROLLER_ID))
+    {
+        hci->transmit_downward(event, p_msg);
+    }
+    else
+    {
+        APPL_TRACE_ERROR("Invalid Controller ID. Discarding message.");
+        osi_free(p_msg);
+    }
+}