4.4 bringup

ro.secure=0
enable_target_debugging := true
WITH_DEXPREOPT := false
PRODUCT_BUILD_PROP_OVERRIDES
ota release tools: comment out stock recovery
rm vendor_module_check make file
default data roaming to false
ota release tools: add build name
main: remove the listing of make files calls
drop the check-product-copy-files
ota files: use shell date
build: add inline kernel building

build: Building with OpenJDK / compile & run with Java 6 & Java 7
Some changes added to compile and run with Java 6 and Java 7.
  - correction of errors with Javac 6:
    - target 1.5 and source empty.
  - correction of errors with Javadoc 7:
    - strange behavior when duplicate classes are given.

Conflicts:
	core/Makefile
	tools/releasetools/ota_from_target_files

Conflicts:
	core/main.mk
	core/product_config.mk
	core/tasks/kernel.mk
	target/product/full_base_telephony.mk