Bump openal-soft submodule
JOAL GlueGen: Force ProcAddress for all / ALExt*: Remove duplicates (AL) in interface _and_ implementation

- Using GlueGen enhancement of commit e58643727cc36d6dc27cec9e02934c26de7621ee
Build Cleanup for Android, Misc changes ..

 - Add 'c.build.openal.soft.android' task
   using GCC_VERSION  -> ANDROID_TOOLCHAIN_VERSION
         NDK_ROOT     -> ANDROID_NDK
         PATH_VANILLA -> PATH

 - Copy openal-soft lib to ${rootrel.build}/obj,
   to be picked up by jar and appt archiving tasks

 - Android build script:
   - Bump to GCC_VERSION 4.7
   - Add PATH_VANILLA, i.e. PATH before adding cross-compile tools 'gcc'

- Sound3DTest: Fix package name