JAXP: Add unfinished tests for XPATH package

There are unfinished tests when we do test colocation for xpath package. For 100% code coverage and test purpose we should add the tests for unfinished part. Which include
1. XPath01 test 39 - 51, reflecting unimplemented feature, were removed from the changeset.
2. Removed were test 09 to 12 from XPathFactory01 that were commented out
3. moved to new test classes XPathFunctionResolver01 and XPathVariableResolver01.