stinst: Make STInST and gst-parse.c consistent about trailing '.'

The Cairo sources can not be parsed. One of the issues is a
trailing '.' at the end of the class definition. Make the
STInST parser behave like gst-parse.c

2013-09-10  Gwenael Casaccio <gwenael.casaccio@gmail.com>

	* GSTParser.st: Make STInST and gst-parse.c consistent about '.'
	at the end of the class definition.
	* GSTParserTests.st: Add testcase for trailing consistency.
stinst: Fix the testcase and update the assert

This is addressing:
STLoaderObjsTests.st:44: assignment to undeclared variable class

2013-09-11  Holger Hans Peter Freyther  <holger@freyther.de>

	* STLoaderObjsTests.st: Fix the test method and test.