Allow the Renderscript Compat lib to work on devices running ICS or lower.

 - WAR for the bug that the dynamic linker ignores RTLD_LOCAL on older devices.
 - Cleanup of Android.mk for librsjni

Change-Id: Icaf29339a29e7f0a7381d883c0ab8a1212b1575d
Disable ASAN for rsg-generator.

ASAN depends on the C++ ABI and an unwinder, which we explicitly
aren't linking here.

Change-Id: Ieba9becf93ebd9c828a26e4ef1f35ed103d957fb
Merge "Allow the Renderscript Compat lib to work on devices running ICS or lower."
Merge "Disable ASAN for rsg-generator."