build: Add support for PRODUCT_COPY_FILES_OVERRIDES

 * We may have a case where prebuilts need to be built from
   source instead based on an externalized config.
 * New directive takes a list of destination files to remove from
   PRODUCT_COPY_FILES so that other instructions can be supplied.

Change-Id: I7feff16440e54d1676ffddbbd96d5947efa43ede
Move emulator.mk out of full_base.mk

Instead we should have the emulator products (full, full_mips, full_x86,
sdk) inherit from emulator.mk directly, because full_base.mk is also
inherited by real device products, such as full_manta.mk.

Conflicts:
	target/product/full_base.mk

Change-Id: I6f5f9255c73be8a4cfad7ddf88c4b633b05a7091
signing: Support userdebug-generated display.build.id lines

Change-Id: I3ae608c12a15f6ede2150567662befa7fce763ca
build: Add QCOM target-specific config

 * Needed to support global DirectTract config on legacy targets
 * Let's also eliminate some boilerplate

Change-Id: I736c10a5e7e1f3d1e0de9e60f29b60add276f151
qcom_utils: Update list of QCOM_BOARD_PLATFORMS

Add msm8226 (Moto G) and other upcoming platforms
Change-Id: Icf895cbcf86791ca800636a1c0893b3a905a27a0
build: Fix cflags for QC targets

Change-Id: I2281bec3afb4d80e80845718d880dc24ef7baf32
envsetup: repolastsync prints date/time of last repo sync

Change-Id: I4280b500e58237479194ad2e230ed7466db87755
Allow individual projects to enforce a property's value

Some projects require system properties to be set to a specific
value (for example, a shared library needing a property pointing
to its own path) in order to work correctly, but some device
configurations are mistakenly setting those properties with the
wrong value (usually inherited from the original OEM build).

"PRODUCT_PROPERTY_UBER_OVERRIDES += property=value" can (and
should) be used in that project's makefile to ensure the value
is the correct one. This variable is intended for software projects,
and should never be used in product makefiles (BoardConfig, cm.mk,
AndroidProduct)

Change-Id: I1986e7c444e51cce8b198e43fdc793fad16d6276