switch hardware libs to android-4.2.1_r1.2 for gnex and n4

Change-Id: I526fb3e481b94f4aed2f02ec16dad77216b1dee5
fix get device script

Change-Id: Ic61e5624f6c1eff33e74716e4c57eed0f5ec90cd
cosmetic changes

Change-Id: Ibfadb50ba0052a4249faf8b597e7daf6aa83cde5
revert DSPManager to working commit

Change-Id: I4496aa0fe96c6f8378fa571ef1eae03448c90029
unify products, packages and update build ids
get external prebuilts using get-prebuilts script

Change-Id: I6719bd34a4a25169418fd6b6e7bb9efe6ae580b0
update LatinIME dictionaries from CM

Change-Id: Id887ea37e8432b241ab337a6791a724274a8aa60
save build manifest

Change-Id: I4ec41dae7b12c2d019112096944b91a90d0fbe29
update prebuilts

Change-Id: If9599defee03b604ba5c543ccb389652fa7b1be7
temporary use qcom_display from pa

Change-Id: I9f55b6c378e7519231733388e6888305087e7315
update bbs

Change-Id: I9756d226fd89789a526ecb1828b1f7ae739754ab
supersu 1.10

Change-Id: Ia5afe66bc8ec4a8112a5895e4888df4bd12b6b1a