CM Theme Engine [3/8]

Add aapt for on device compiling of theme assets

Change-Id: I2f9f4b3e27ddf32b339694f9c6d3b75a12b700d9
Merge branch 'TE' of https://github.com/AOSPA-legacy/android_build into kitkat
Merge branch 'kitkat' of https://github.com/CRXTeam/android_build into kitkat