Remove Transliterator wrapper class.

This change removes the wrapper class in Java which was used for
proxying requests to ICU4c. Now ICU4J is called directly at the
call sites. See:

This is done by replacing instantiations of the old Transliterator
class with calls to a static factory in ICU4J which returns a cached
transliterator if available, otherwise creates it on demand.

This change requires that the transliterator resource directories
and source files are added to our java libraries, which increases
the size of core-libart.jar from 2.289 MB to 2.332 MB. Maybe it's
possible to wait until dependencies on ICU4c have been removed to
see if we can save space there.

Change-Id: I2b2f84a051ba9815ba6d346dfe7fb764e39032c4
7 files changed