Use a more modern -j flag.
Use a more modern -j flag.

Change-Id: I2498139dd41637a795ca43f830c952adb2856d83

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