[8] Review request for 8007146 [macosx] Setting a display mode crashes JDK under VNC

[Alexander Scherbatiy]

bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8007146
webrev: http://cr.openjdk.java.net/~alexsch/8007146/webrev.00

The issue is reproduced when a program is running under a VNC and all 
monitors are disconnected from the Mac OS X system.
The CGDisplayCopyAllDisplayModes returns display modes with width and 
height equal to 1.
CGCompleteDisplayConfiguration returns error when the invalid display 
mode is set and JDK crashes after releasing the display configuration.
According to the CGCompleteDisplayConfiguration doc: "On return, this 
configuration is no longer valid."

The fix filters the invalid display modes and does not release the 
display configuration.

Thanks,
Alexandr.