Merge changes I18a21ea4,I2fecb008

* changes:
  Upgrade 3.10 kernel images to c2b95821
  build-kernel.sh: Use GCC 4.9 automatically for Mips64 build.
tree: 111f40191f8134dbba72fe802dfc94a77503f6bd
  1. arm/
  2. arm64/
  3. kernel-toolchain/
  4. mips/
  5. mips64/
  6. x86/
  7. x86_64/
  8. build-kernel.sh