Merge gdl-tools branch of the java-libs

This merges the gdl-tools branch of java-libs (which was branched about
a year ago) with the trunk again. This is to enable the gdl-tools to be
able to use the java-libs directly again.
Adding missing LoadTest.java
Fixed issue with DvDuration test, SCM update on pom files
Measure service
Measurement service. Equal units fix.
Measurement service. Equal units fix.
Measurement service. Equal units fix.
SCM fix
add .gitignore
Merge remote-tracking branch 'upstream/master'

Conflicts:
	.gitignore