java bindings: fix find by hash query to be a string query
Merge pull request #170 from adam-m/master

Fix bug in file query by md5
java bindings: add public close() support to Content objects.  Make synchronization when dealing with handles more granular.
add file to log msg
update news
Merge pull request #171 from adam-m/master

add public close() support to Content
Removed tsk_incs.h from make clean target