android toolchain and CMakeLists.txt update

cmake: android toolchain update to latest upstream and set ANDROID_DEFAULT_NDK_API_LEVEL 9
android CMakeLists.txt: added support for both 'support' and 'compatibility' in support library path for v7 appcompat
supports path styles:
$ANDROID_SDK/extras/android/support/v7/appcompat
$ANDROID_SDK/extras/android/compatibility/v7/appcompat
Using the latest SDK.
My android environment has been in existence for many years so it has the original support library path.  Anyone who has been developing in Android for a while and updated their environment using Android SDK Manager will have this.