Add check for local OTA_FROM_TARGET_SCRIPT

Change-Id: I69ac2572b902f67fe66f97be38ab5277923c246f
Speed up builds by not signing in build

Squisher resigns the apks, so no need to double sign.

Change-Id: I036f8933589e598204d873ff15b4918b51435334
Data roaming off by default

Change-Id: I258ae1120cbcd2a500b825f6295087e68b245ae9
CellBroadcast fear mongering

Change-Id: I25a053658c94f28b9b4bec34e061b5659b2dc96f
Inline kernel compilation

Change-Id: Iffe7504f342f75b88953488e7a4ce9c9f0009367
Improve ccache support by allowing host's ccache with compression support

Change-Id: I506cefa20e56a3c13d3a3c4c9d885ffa83400bb3
Add colors to build, adopted from CM commits:

  94bc5ec4 Tanguy Pruvot 2012-01-09
  531f4776 Tanguy Provot 2012-03-29
  b5632daa nebkat        2012-03-31
  cd5ea045 Chirayu Desai 2012-10-13

Change-Id: I41a34a9f47989161096e25485caa4e8fe04ecd99