Use StringBuilder class instead of StringBuffer

As directed in StringBuilder javadoc: it is unsynchronized and faster
Update git URLs in pom.xml
Remove javacc-maven-plugin from pom.xml

This plugin has no effect and javacc generated classes are already
checked-in after every change to where.jj.
Update maven-compiler-plugin, wagon-ssh, junit version in pom.xml

Update maven-compiler-plugin source/target to 1.6

Update wagon-ssh to version 2.5

Update junit to 4.11
Merge remote-tracking branch 'sfnet/master'

Conflicts:
	pom.xml