Merge remote-tracking branch 'upstream/master' into merge_1_1_3_snapshot

Conflicts:
	pom.xml
	src/main/java/org/jenkinsci/plugins/ghprb/GhprbBuilds.java
	src/main/java/org/jenkinsci/plugins/ghprb/GhprbGitHub.java
	src/main/java/org/jenkinsci/plugins/ghprb/GhprbRepository.java
	src/main/java/org/jenkinsci/plugins/ghprb/GhprbTrigger.java
Add Guava to dependencies