Fix fragment flickering on hiding (support library)

The "loadAnimation" method inside of the "hideFragment" method was called with "enter" argument set to "true". That's clearly a mistake. There is entry for this bug in issue tracker (http://code.google.com/p/android/issues/detail?id=32405)

Change-Id: I826c7c668f223dbf1b3fbd0b82f7084c5657649c
Clang: Silence warnings (2/3)

With GCC >=4.7 Clang generates a lot of noise with various compiler flags,
and can even break the builds when using Flags like Graphite.  This can be
reproduced by doing the following:

Setting TARGET_EXTRA_CFLAGS with Graphite flags such as these
TARGET_EXTRA_CFLAGS +=	-fgraphite-identity \
			-floop-block \
			-floop-strip-mine \
			-ftree-loop-distribution \
			-ftree-loop-linear

Causes the following errors to occure and the builds to fail:

clang: error: argument unused during compilation: '-fgraphite-identity'
                                                  '-floop-block'
                                                  '-floop-strip-mine'
                                                  '-ftree-loop-distribution'
                                                  '-ftree-loop-linear'

Silence the errors by passing the -Qunused-arguments for CFLAGS

Singed-off-by: Paul Beeler <sparksco@gmail.com>

Conflicts:

	v8/renderscript/rs_support/Android.mk

Change-Id: Ibeced81aaf4dd192ec2add65a3704eed1e4ee1b5