Fix the build.
Fix the build.

Looks like not all flavors of the android build include support for
std::numeric_limits.  Fix the build by using a simple macro for now.
A more elegant solution can be searched for once the build is green
again.

Change-Id: I18329cd0d26ca69de6a52df9a1c6eeb3ba063b48

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base