Build: update qcom_utils.mk

Add build macro to determine Android Release

Adding platform sdk version 18 for JB MR2.

Change-Id: I79aa831ddd335bd14bd777506c210acc5d9960f1
build: Add script to generate extra images

Change-Id: I53081c7a2b4f18bc8c8a27b04d311a6b078b2022
Use CM standard qcom naming

Change-Id: I360b3dcf1fe82140a7993189e881f9d77b571bef
[HAX] Allow per-target dtbTool

 * Revert this when fixed

Change-Id: I97ecb0448ae7bd5859454be290c5dde6248b2859
releasetools: use prebuilt boot image if using a custom boot image makefile

Change-Id: Ic348d31e8df7933dc4f9f055b7a5a2beacc21d32