makefile: Add changelog generator (1/2)

add "export CHANGELOG=true" in build.sh

Change-Id: Ibfddd3afc2a0d5e3d3b865572f65c0e7b314f6be
build: Ensure /system unmounted at install start

Account for the possibility that a user has mounted system manually
before installing the FullOTA package.

Change-Id: I97d0540676a7ce98762545e76ecb1a7f6335d204
Add ext2, ext3, and vfat to releasetools

Support some non-standard partition that may be found in recovery.fstab

Conflicts:
	tools/releasetools/common.py

Change-Id: I0026a1d3ae5d432db10150d1a15f7bc8e7a6054b
core: Enable -mcpu=cortex-a8 flag for Scorpion cpu variant

To be used with
	http://review.cyanogenmod.org/#/c/77758/

Change-Id: I7ecc4707fa45bd7098165615c0521a12c85fb087
buildinfo: only set ro.build.product on non-unified devices

Change-Id: I5dccba2172dade3dacc55d832a2042fce306b5f5
core: Enable -mcpu=cortex-a9 flag for Cortex-A9 cpu variant

Change-Id: I9294a518bcdc21ccbae72eadd9f3c1a12982d028
core: armv7-a-neon.mk: Add missing endif

Change-Id: Id6f9c952d01d3c980115a52605d9c86038b3b5bd
build: Parse TARGET_COPY_FILES_OVERRIDES late in setup

Change-Id: I6f9c4fcfa8f18ecfd4dc8a503120960bf2fcdfe6
Signed-off-by: cj360 <ayunker551@gmail.com>
build: Fix QCOM_BSP_LEGACY cflags

Change-Id: I880f32892d9e082e3ba92878414f3cb3c6f08066
build: Clean up QCOM flag definitions

Change-Id: I66bca2db83260ccd65b82e540ee9f7961f00b030
Signed-off-by: cj360 <ayunker551@gmail.com>

Conflicts:
	core/qcom_target.mk
build: Add QCOM flags to Clang CFLAGS

Change-Id: I56f0d4106f5d3d27c1ace744d30c1c81f0052bbd