Added this to the pom: <product>org.eclipse.platform.ide</product> to
resolve failing tests

Did minor cleanup of whitespace and commented out code in:
MylynTestBzQuery.java and MylynTestValidate.java

Ammended - test was inadvertently commented out.
Corrected inadvertent commenting out of a test
Modified pom.xml to enable the tycho plugin parameter to be specified
from the CLI - the parameter name and default value is:
<tychoPluginProductParameter>org.eclipse.platform.ide</tychoPluginProductParameter>