Revert "libgcc_compat: Introduce __aeabi_lasr for cortex-a9 and higher"

This reverts commit be06f2007e6c7328bf533784275a24de64df79fb.
Revert "libc: switch to C11 and C++11"

This reverts commit f5d49a141475106c13964e5bf70f6e35f3c614d7.
Revert "tests: memcmp and memcpy unaligned benchmarks"

This reverts commit 4f9ab46affbc7d856f6120216104707b0c42f85f.
libc: switch to C11 and C++11

with gnuism support

Change-Id: Ic42199b4adc45b8bbe8cf07eff2ca8931beb5f14