D-12493: fix silent test break, check for 409 when duplicate
add maven-compiler-plugin
fix broken Nexus URL for all groups
B-48565: add Link header for prev and next
Merge remote-tracking branch 'upstream/master' into B-48565
Merge pull request #249 from shintasmith/B-48565

add Link header containing next and previous links
[maven-release-plugin] prepare release parent-1.2.10
[maven-release-plugin] prepare for next development iteration