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: support ceph_get_osd_addr

Adds a few JNI utilities from the Android project (license: Apache) to
help with IP address conversions. These functions are also updated to
work in our environment (use Ceph exception utilities, edit header
paths).

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
java: pretty print Ceph extent

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