Revert "JustArchi's ArchiDroid Optimizations V3.1"

This reverts commit 271849fd26311483a6bd0ce7439213eca7b4274c.
Revert "JustArchi's ArchiDroid Optimizations V3"

This reverts commit adbfa23abb59ac72aa8c33d688137ab64685ee67.
core: arm: Add support for GCC 4.8 and 4.9

Change-Id: I96bffffb4b0e16ef5bcedc85dedc70ca3dc2182f
core: arm: Use -O3 optimization inside TARGET_arm_CFLAGS

Change-Id: I224b62b3dada874d00a90258a1dcffcea09bc029