Use build_number from file
Use build_number from file

Improve incremental ninja builds by keeping the command line the same
across builds.

Change-Id: If9dfcee74a4d282c183f9669e14a89104c115a71

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