Added a rewrite flag to ParameterNode::setName().
Minor grammatical fix in the doc comment.
Fixed a bug and created a test case.
Added a bucketload of assertions for testing ParameterNode.
#76: ParameterNode::setName() should be symmetrical with getName().
Merge pull request #79 from grom358/parameterSetName

Added a rewrite flag to ParameterNode::setName().