am a5f534df: use frozensets to represent APK cert sets
am a5f534df: use frozensets to represent APK cert sets

* commit 'a5f534df07a598f3fc9d353a1a9a0ff6c09cfbc0':
  use frozensets to represent APK cert sets

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