Fix AWT EDT Deadlock in AWTWindowClosingProtocol, regression of commit 808a9a27a8c1c9e0a6701a8dd81d51f8daa8129d
Adapt to GlueGen's relocation of AWTEDTExecutor - GlueGen commit 99a50b38f5650fedca0f207e03706ffa9492e50c
All AWT Related Unit Tests: Call AWT 'frame.setVisible(..)' and 'frame.pack()' on AWT-EDT - Use dedicated test TestBug572AWT for testing otherwise.
TestBug572AWT: Add test case w/ setting GLCanvas's size and frame.pack() on AWT-EDT and current thread.