[JENKINS-17876] Directly invoke QuotedStringTokenizer so quotes can be preserved in both the installation default args and the instance args.
Update parent to 1.420 so the plug-in will build with Java 7

When building with Java 7 the error java.lang.NoClassDefFoundError:
com/sun/mirror/apt/AnnotationProcessorFactory is thrown.  This was
problem in the maven-hpi-plugin; updating to 1.420 pulls in a recent
enough version of the maven plugin that fixes the error.
Merge pull request #7 from tyrius02/master

[FIXED JENKINS-17876] Use QuotedStringTokenizer when constructing msbuild command-line arguments