Switch to GA mode for final release.
Update release notes for 8u262 release.
Split JDK-8042159 patch into per-repo patches as upstream.
Update JDK-8042159 JDK patch to apply after JDK-8238002 changes to Awt2dLibraries.gmk
Remove issues in NEWS file duplicated between 8u252 & 8u262 releases.
