OS X: modify rhino1_5R5 patch for JDKs >= 1.5

Change-Id: Ie07d71055d2776c0701a23db05a0cb91b8d5cb5b
Reviewed-on: https://gerrit.libreoffice.org/9809
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>