Make use of new memcpy, tweak settings

Summary:
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The new memcpy() is slightly faster than the cortex-strings version,
and fixes the Galaxy Nexus camera issue.

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>

Test Plan: verified in micro bench

Reviewers: randall.rushing, jriordan001, anders3408, synergy

Reviewed By: synergy

Differential Revision: http://review.codefirex.com/D235

Conflicts:
	libc/Android.mk

Change-Id: I89fd0f71c271e047595199e5a6c2f83dd39305a3
Signed-off-by: DHOMD <DHO@dho.im>