Move odex related files to product-specific dir.

For target Java libraries, now the LOCAL_BUILT_MODULE includes both javalib.jar
and the .odex file, if dexpreopt is enabled.
These 2 files are moved to a product-specific dir in this change.
For target Java Libraries, $(intermediates) now points to the product-specific dir.
There is still a javalib.jar in the $(intermediates.COMMON) dir, which is used as dependency.
Nothing is changed for host Java libraries.

Change-Id: I2546dbb940c74537864ca002d1acb49bb731fbbc