<AWT Dev> [9] Review Request: 8039926 -spash:<image> can't be combined with -xStartOnFirstThread since JDK 7

[Petr Pchelko]

Hello, AWT Team.

Please review the fix for the issue:
https://bugs.openjdk.java.net/browse/JDK-8039926
The fix is available at:
http://cr.openjdk.java.net/~pchelko/9/8039926/webrev.00/

When running SWT we should not start the main event loop for splashscreen because it breaks SWT.
The only way understand that in splashscreen code is to check the system property launcher sets on 
the startup. We do the same in awt.m, but we cannot reuse the code because splash and awt are not
statically linked.

With best regards. Petr.