Move test files to test package.
Move wikitext.test to wikitext.parser.
Moved test support classes to test/
Clean up and ignore test-classes directory.
Removed unused Slim test support classes.
Merge branch 'separate-tests'

Conflicts:
	build.xml
	test/fitnesse/responders/run/TestResultFormattingResponderTest.java
	test/fitnesse/runner/CachingResultFormatterTest.java
	test/fitnesse/runner/FormattingOptionTest.java
	test/fitnesse/runner/HtmlResultFormatterTest.java
	test/fitnesse/runner/PageResultTest.java
	test/fitnesse/runner/StandardResultHandlerTest.java
	test/fitnesse/runner/XmlResultFormatterTest.java