ME: Add Eclipse project files.
MW: New class xHElLMSample
 MW: xHELMSample
MW: xHELM Tests
MW: Other HELM examples
MW: Tag name changes in XML and XSD
MW: Nex xml schema
MW: New XHelmSchema.xsd
MW: cHelmSample without initializatio of MonomerFactory
MW: new unit test classes
ME: HELMNotationToolkit: Automate unit test run.
MW: new junit tests
SM: unit test for SimpleNotationParser
SM: Unit test for Calculator
MW: Unit tests ComplexNOtationParser
Merge branch 'exchangeablehelm' of ssh://git@172.16.30.153/git/HELMNotationToolkit into exchangeablehelm
ME: JUnit 3 -> JUnit 4.
ME: Merge remote echanges.
SM: Calculator Unit Test
SM: new unit tests