FindJava2+WinLauncher2 MFC app for Windows.

In the code base we have a "find_java" directory
that compiles using mingw32 + an Android.mk; it is
used to create the find_java.dll used by the NSIS
installer, the find_java.exe that is used by android.bat
to locate java before executing the SDK/AVD Manager
and finally also used by the Android Studio WinLauncher.

This reworks find_java to create 2 new MFC apps:
- FindJava2 is a straight replacement for the previous find_java.exe.
- WinLauncher2 will be a replacement for the Studio launcher.

The main change is that the new app has a UI so it lists
all the Java.exe paths and let the user add his/her own.
Then it remembers the selected path using a registry key
and reuses the next time if it's available.

The app is built using VS2013 and MFC and there's no
Android.mk for it. The goal is to just make prebuilts
(that's how find_java.exe/dll and WinLauncher are actually
used right now.)

The FindJava2 part is final.
What's left to do:
- Merge the code of WinLauncher into WinLauncher2 to
  actually run Studio (they will be a need for both a
  32-bit version and 64-bit version support.)
- Create a new FindJava2.dll for NSIS once we decide how
  we want to use this in the new installer (e.g. do we
  just want to make sure there is "some" version of Java
  or do we want to include the select-and-register functionality
  too so that the user doesn't have to be asked again later?)

Change-Id: I814ed46711ac17a66cd63b9e7c7d485632169ff1
diff --git a/find_java2/src/utils.h b/find_java2/src/utils.h
new file mode 100755
index 0000000..3557f58
--- /dev/null
+++ b/find_java2/src/utils.h
@@ -0,0 +1,59 @@
+/*

+* Copyright (C) 2014 The Android Open Source Project

+*

+* 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.

+*/

+

+#pragma once

+

+#include <atlpath.h>                            // ATL CPath

+

+// Global flag indicating whether this is running in debug mode (more printfs)

+extern bool gIsDebug;

+// Global flag indicating whether this is running in console mode or GUI.

+// In console mode, errors are written on the console; in GUI they use a MsgBox.

+extern bool gIsConsole;

+

+// Must be called by the application to initialize the app name used in error dialog boxes.

+// If NULL is used, fetches VERSIONINFO.FileDescription from resources if available.

+void initUtils(const TCHAR *appName);

+

+// Returns the app name set in initUtils

+CString getAppName();

+

+// Displays a message in an ok+info dialog box. Useful in console mode.

+void msgBox(const TCHAR* text, ...);

+

+// Displays GetLastError prefixed with a description in an error dialog box. Useful in console mode.

+void displayLastError(const TCHAR *description, ...);

+

+// Executes the command line. Does not wait for the program to finish.

+// The return code is from CreateProcess (0 means failure), not the running app.

+int execNoWait(const TCHAR *app, const TCHAR *params, const TCHAR *workDir);

+

+// Executes command, waits for completion and returns exit code.

+// As indicated in MSDN for CreateProcess, callers should double-quote the program name

+// e.g. cmd="\"c:\program files\myapp.exe\" arg1 arg2";

+int execWait(const TCHAR *cmd);

+

+bool getModuleDir(CPath *outDir);

+

+// Disables the FS redirection done by WOW64.

+// Because this runs as a 32-bit app, Windows automagically remaps some

+// folder under the hood (e.g. "Programs Files(x86)" is mapped as "Program Files").

+// This prevents the app from correctly searching for java.exe in these folders.

+// The registry is also remapped.

+PVOID disableWow64FsRedirection();

+

+// Reverts the redirection disabled in disableWow64FsRedirection.

+void revertWow64FsRedirection(PVOID oldWow64Value);