build: Parse TARGET_COPY_FILES_OVERRIDES late in the setup

Change-Id: Ie3e4a168ff224e3b65e4627c0757e8813a02167f
Merge remote-tracking branch 'cm/cm-12.0' into cm-12.0

Conflicts:
	core/config.mk

Change-Id: I1efaf505e83aebcfc290adfd014f3fd7548de76e