java-1_6_0-openjdk: update to 1.12.4
java-1_6_0-openjdk aka IcedTea was updated to 1.12.4 (bnc#807487)
- S8007014, CVE-2013-0809: Improve image handling
- S8007675, CVE-2013-1493: Improve color conversion
- Submitted by Michal Vyskocil (mvyskocil)