Merge pull request #100 from aronr/CSPACE-5980

CSPACE-5980: Adding Ray's contribution of a block in the <build> section...
CSPACE-6193: Set log level for AssemblingContentHandler class to INFO, in order to write output from XmlMerge operations to disk for debugging. Whitespace reformatting and minor cleanup in that class.
Merge pull request #104 from aronr/CSPACE-6193

CSPACE-6193: Log output from XmlMerge operations to disk for debugging.