Replace 'ap' with 'up' suffix in variable names. (NFC)

The `ap` suffix is a remnant of lldb's former use of auto pointers,
before they got deprecated. Although all their uses were replaced by
unique pointers, some variables still carried the suffix.

In r353795 I removed another auto_ptr remnant, namely redundant calls to
::get for unique_pointers. Jim justly noted that this is a good
opportunity to clean up the variable names as well.

I went over all the changes to ensure my find-and-replace didn't have
any undesired side-effects. I hope I didn't miss any, but if you end up
at this commit doing a git blame on a weirdly named variable, please
know that the change was unintentional.

llvm-svn: 353912
diff --git a/lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp b/lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp
index b295590..93c59dd 100644
--- a/lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp
+++ b/lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp
@@ -231,27 +231,27 @@
     return error;
   }
 
-  std::unique_ptr<ConnectionFileDescriptor> conn_ap(
+  std::unique_ptr<ConnectionFileDescriptor> conn_up(
       new ConnectionFileDescriptor());
-  if (conn_ap) {
+  if (conn_up) {
     // Only try once for now.
     // TODO: check if we should be retrying?
     const uint32_t max_retry_count = 1;
     for (uint32_t retry_count = 0; retry_count < max_retry_count;
          ++retry_count) {
-      if (conn_ap->Connect(remote_url, &error) == eConnectionStatusSuccess)
+      if (conn_up->Connect(remote_url, &error) == eConnectionStatusSuccess)
         break;
       usleep(100000);
     }
   }
 
-  if (conn_ap->IsConnected()) {
+  if (conn_up->IsConnected()) {
     const TCPSocket &socket =
-        static_cast<const TCPSocket &>(*conn_ap->GetReadObject());
+        static_cast<const TCPSocket &>(*conn_up->GetReadObject());
     const uint16_t reply_port = socket.GetLocalPortNumber();
 
     if (reply_port != 0) {
-      m_comm.SetConnection(conn_ap.release());
+      m_comm.SetConnection(conn_up.release());
 
       if (m_comm.SendRequestReattach(reply_port)) {
         if (m_comm.SendRequestConnect(reply_port, reply_port,
@@ -408,11 +408,11 @@
 addr_t ProcessKDP::GetImageInfoAddress() { return m_kernel_load_addr; }
 
 lldb_private::DynamicLoader *ProcessKDP::GetDynamicLoader() {
-  if (m_dyld_ap.get() == NULL)
-    m_dyld_ap.reset(DynamicLoader::FindPlugin(
+  if (m_dyld_up.get() == NULL)
+    m_dyld_up.reset(DynamicLoader::FindPlugin(
         this,
         m_dyld_plugin_name.IsEmpty() ? NULL : m_dyld_plugin_name.GetCString()));
-  return m_dyld_ap.get();
+  return m_dyld_up.get();
 }
 
 Status ProcessKDP::WillResume() { return Status(); }