PATCH: Compile options for Android
Cherry pick:
fix of android build with ndk-r8e. And enable JIT support for android.
Cherry pick:

Build spidermonkey for Android/x86

* ... and improve the build script
Cherry pick:
Disables YARR JIT by command line
Fix NDK_ROOT from cherry pick
A new and consistent way to build multiple architectures for iOS and android.
Sometimes the generated include headers are different, so we keep them all in the release folder.