[JENKINS-19801] Abort module build when maven build is aborted
[FIXED JENKINS-13926]
Change for skip saving job maven opts, when this is the same as the global maven opts.
Now the global maven opts can't be saved accidentaly as job maven opts.
[FIXED JENKINS-20385] provide better error message if 'home' of Maven installation isn't set
[JENKINS-19884] Show aggregated failures same way Matrix build does
[JENKINS-19884] .bigtable for test result lists
Merge branch 'master' into stop-maven-build

Conflicts:
	src/test/java/hudson/maven/MavenBuildTest.java
[JENKINS-19801 JENKINS-19884] Bump core version to 1.538
Merge pull request #4 from olivergondza/stop-maven-build

[JENKINS-19801] Abort module build when maven build is aborted
[JENKINS-19801] refactor MavenBuildTest.stopBuildAndAllSubmoduleBuilds
Merge pull request #8 from mrebasti/jenkins-13926

[FIXED JENKINS-13926] Don't save per-job MAVEN_OPTS if they're the same as the global ones