[7u4-osx] Request for approval for CR 7124364: [macosx] Robot screen capturing functionality doesn't work

[Leonid Romanov]

Hi,
This a request to push the following changes to jdk7u-osx.

CR: http://monaco.us.oracle.com/detail.jsf?cr=7124364
Webrev:  http://cr.openjdk.java.net/~leonidr/7124364/webrev.00/

The fix removes a bunch of code that was only useful when Robot used OpenGL for taking a screenshot. The removed code prevented Robot from correctly taking screenshot in case of multiple monitors configuration.

The fix has been reviewed on macosx-port-dev mailing list by Anthony Petrov and Alexander Zuev.

Thanks,
Leonid.