Replaced deprecated (since ARMv7) data memory barrier with __sync_synchronize.
[android] Updated Android build scripts to use NDK r9 and GCC 4.8 to compile mono for ARM and x86
Merge pull request #166 from hkr/unity-staging

Updated Android compiler to GCC 4.8, using __sync intrinsics for ARM memory barrier
Fix length of mul_imm instruction on amd64.
Case 644587.
Merge pull request #170 from Unity-Technologies/unity-staging

Android compiler update to GCC 4.8, replaced ARM memory barrier inline asm with __sync intrinsics