Results of SwingMark benchmark (Linux/Solaris only)

============================================================================
/export/dmitry/ws/6u18-latest/results/xdebug-enable/
Benchmark Samples Mean Stdev Geomean Weight
swingmark 10 600.22 6.70
============================================================================
/export/dmitry/ws/6u18-latest/results/xdebug-disable
Benchmark Samples Mean Stdev %Diff P Significant
swingmark 10 646.18 10.30 7.66 0.000 Yes
============================================================================
* - Not Significant: The %Diff for the mean could be noise. If there is
    an actual difference, more samples would be needed to detect it.

============================================================================
/export/dmitry/ws/6u18-latest/results/xdebug-enable-2
Benchmark Samples Mean Stdev Geomean Weight
swingmark 10 609.52 4.10
============================================================================
/export/dmitry/ws/6u18-latest/results/xdebug-disable-2
Benchmark Samples Mean Stdev %Diff P Significant
swingmark 10 648.40 4.11 6.38 0.000 Yes
============================================================================
* - Not Significant: The %Diff for the mean could be noise. If there is
    an actual difference, more samples would be needed to detect it.

So, the fix gives noticeable performance profit.

Also, it fixes another (quite serious) issue:

6397447: Splash screen (-splash:splash.png) + text drag = KDE/GNOME freeze