toolchain/build: Introduce Android patch for gcc 4.8

* add build script to make building easier
* apply android patch to upstream gcc 4.8
* apply android patch to upstream binutils

Change-Id: Ia25eb66fa505f07c8148609707fbaf36b3b54b5a
toolchain/build: Use --disable-libquadmath for gcc

Change-Id: I938e744ac07f9f7983e8f746e012aad14ad5cdf0
toolchain/build: Use --disable-libatomic for gcc

libatomic can't currently be built for Android, breaking
the gcc trunk (4.8) build process.

Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>

Conflicts:
	Makefile.in
gdb: Disable simulator target and tui

Change-Id: If8a135c5b2fff4b422b2b26fea701c3ac09de7c9