[JENKINS-19801] Abort module build when maven build is aborted
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