update 4.9 script

-build with host Ubuntu gcc 4.8
-WTF now have to disable libsanitizer

Change-Id: I2b6062a87f8b08482af97de0b265bb364667feee
Build with host gcc 4.8

Change-Id: I2730ec563b3675c3ac9ab1b5e49bcc30c0675a88
build with host gcc 4.7

Change-Id: I36c6fca35786f0090a455f09ce604d2c27b3cb6f
Merge branch 'master' of github.com:SaberMod/toolchain_build