Mario de Sousa <msousa@fe.up.pt> [Mon, 16 Apr 2012 14:41:07 +0100] rev 510
Fixing check for assignment to output variables.
Mario de Sousa <msousa@fe.up.pt> [Sun, 15 Apr 2012 19:56:33 +0100] rev 509
Fixing some bugs in lvalue checking (other bugs remain - to be fixed later)