Modify SetWM family of functions:

1. SetWMSizeHints - pass size hints to Cocoa. wInc and hInc must be ... ignored: if you call Cocoa's setResizeInc, and pass 0, 0 (this what ROOT's GUI does),
Cocoa .... will multiply your window sizes by this nice zeros, sending it to a parallel world  (or may be, it's smart enough to divide????). 
"Think different" is soooooo DIFFERENT!!! - ok, but it's still better to use brain to think, not any other ... organ(s).

2. Ignore decoration hints for a transient window.


git-svn-id: http://root.cern.ch/svn/root/trunk@44113 27541ba8-7e3a-0410-8455-c3a389f83636