build: Disable Tamil locale

With only 3% approved in CM project and 1% on AOSP project
in the past 5 months, this is a no-go

Change-Id: I0c9d31d5737a2191e9a425b9de98ca659071ad7d
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