Add a phony "nothing" goal that reads the makefiles but doesn't try to build anything.
Add a phony "nothing" goal that reads the makefiles but doesn't try to build anything.

Change-Id: Idac551e5c796321e993b94761f5cbf5b55c1a994

hagar006/platform_manifest,RR-msm7x30/platform_manifest,xorware/android_build,xorware/android_build,pranav01/platform_manifest,see4ri/lolili,xorware/android_build,fallouttester/platform_manifest,Hybrid-Power/startsync,knone1/platform_manifest,ND-3500/platform_manifest,xorware/android_build,xorware/android_build