Statically link libgcc and libstdc++ into gold
Statically link libgcc and libstdc++ into gold

gold built with newer mingw requires libgcc_sjlj_1.dll and
libstdc++-6.dll on runtime. Adding flags to link them statically.

Change-Id: Ic0d8143434164c6519c9e4b185a54cec3b8e72d6
Signed-off-by: Pavel Chupin <0a60e45b66c2b4027d58f06ed039b3b27a2f3f3b@intel.com>

android-ide/toolchain-build,KangDroidSMProject/toolchain_build