add support for overriding build.prop settings.

Change-Id: Ie4224d608b7bcb0c2087bd77bc954f8f5f9b6495

Conflicts:

	core/Makefile
Revert "Load only the current product config makefile."

This reverts commit 54fa8c3ff9b1f0f1b0b9c551be864f1b7378c7fc.

Change-Id: Ia942d826eae08429d91bbfbb6c43b1cdd78563f7

Signed-off-by: Brandon McAnsh <brandonm@matricom.net>
Squash commits from CM for making lunch faster

Load only the current product config makefile.

To reduce the start time.
With the change and previous change of doing clean step in only given paths,
start time of mm/mmm is reduced from ~5s to about 1s;
lunch time is reduced from ~40s to 3.5s.

Bug: 7186768,7169854
Change-Id: Ifd72ba1c6362a5e1125a23c505fd47947ab56675

build: Fix fastpath code for AOKP

 * We need to adjust to the new validations

Change-Id: I9066d4f437beb9597027ee6bbb52504b5e7e84c5

build: Preliminary support for CM product builds

If building a cm_* product, skip crawling the filesystem for
AndroidProduct makefiles (and, of course, parsing their contents)
and aim directly for the device/cm/<product> device configuration

Change-Id: I2a5e70dda973a6fcdbba0d5e26b35b99d3f1aea2

Change how we search for CM makefiles.

build: Fix fastpath code for CM_BUILD

 * We need to adjust to the new validations

Change-Id: I9066d4f437beb9597027ee6bbb52504b5e7e84c5

build: export AOKP_BUILD

reference AOKP_BUILD

Change-Id: I95d9f05c622e74117cda0967cf6cf248a68e56c5
product_config: Remove TARGET_PRODUCT_DIR define and have device tree create it

Signed-off-by: Brandon McAnsh <brandonm@matricom.net>
envsetup: Add breakfast function to load env tailored to matricom devices

Signed-off-by: Brandon McAnsh <brandonm@matricom.net>