Switch NDK libraries to 4.9 for x86_64 and mips64
Switch NDK libraries to 4.9 for x86_64 and mips64

Android NDK r10b doesn't even provide 4.8 for those
archs.

Change-Id: I10840c6c7bbc0dd9028a794162d021d8b3e6b19a
(cherry picked from commit fabd383bc876ff803a3565ccedd9b61559bf5127)

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build