ril: disable pthread build flag

Change-Id: I559b6596916af487c73c6717ab6674a88de09935

Conflicts:
	ril/libsecril-client-sap/Android.mk
	ril/xmm6260/libril/Android.mk
gralloc: fix find_last_rect()

Change-Id: I4850a0a848c0c859be1e0b3b0ff8e280ba63af0b

Conflicts:
	exynos4/hal/libgralloc_ump/gralloc_module.cpp