Mark installable jars with installable: true

Most jars don't need to be installed on the device.  Instead of
using java_library and java_library_static to distinguish between
them make java_library and java_library_static identical and use
installable: true to identify the few jars that need to be dexed
and installed on the device.

Bug: 110885583
Test: m checkbuild
Change-Id: I19c0e723285c7088700f50567b9c2140289f9edf