jre7-openjdk-headless-fontfix: Set filenames to 'source' array entries

ABS change: 039545ef44601c681fb1a4fe7843b04f9d6d3841
jre7-openjdk-headless-fontfix: Add changset to filenames in 'source' array entries

This prevents file confusions between different version builds

ABS change: a79c1a86fcce2937aad331297b3ea09bab3147f2
jre7-openjdk-headless-fontfix: Update to 7.u51_2.4.6-1

Upstream release 7.u51_2.4.6-1

ABS change: a0c4a91ea39dc8c05c56233046568846147154ac