Default patch level 3 was not working here and must
be overriden with gb_UnpackedTarball_set_patchlevel
function with 2.

New java file OfficeScriptInfo.java was extracted from
rhino1_5R5.patch and added with gb_UnpackedTarball_add_file.

Change-Id: Iba25b2350caffd943af93f59fa2139332b009ef2
Reviewed-on: https://gerrit.libreoffice.org/752Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>