don't use /cache/dalvik-cache for now

Adding the property will fix the bootloop when trying to dexopt system.

Change-Id: Ia2f93a79690e638e72191c4fd345d05e3ab3a01a
Signed-off-by: kecinzer <kecinzer@gmail.com>
Merge remote-tracking branch 'aokp/kitkat' into kitkat