java: support ceph_get_file_extent_osds

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
java: support ceph_get_osd_crush_location

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
java: add utilities from Android project

Various JNI helper functions, especially helpful for converting
sockaddr_storage into Java InetAddress.

Apache 2.0 License

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
java: setup util routines to be shared

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
java: compile JNI utilities from Android

From the initial commit of the utiltiies, we edit include paths, remove
unused functions, class path's that are Android/Dalvik specific,
and use Ceph exception utilities.

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>