sunit: Fix double hash in the printString of TestCase

After my change in commit 0f550663b46a9785c353dbab8b2721f8b5620ce0
all selectors carried a double hash as selector name. This is not
correct and this commit is fixing it.

2013-10-13  Holger Hans Peter Freyther  <holger@freyther.de>

	* packages/sunit/SUnit.st: Remove extra $# from the
	>>#nextPutAll:
	* packages/sunit/SUnitTest.st: Update the test result
	for testSelector being an UndefinedObject and add an
	extra testcase.