Update all build scripts to be less hacky, and drop support for EOL 4.7

Also clean up config args for binutils gold linker
Opps
Fix binutils gold linker default settings
Merge remote-tracking branch 'sm/master'

Signed-off-by: Chester Kener <Cl3Kener@gmail.com>

Conflicts:
	arm-androideabi-4.8
	arm-androideabi-4.9
	arm-eabi-4.8
	arm-eabi-4.9