Fix a problem in IrrlichtDevice::setResizable that caused window titlebars to...

Fix a problem in IrrlichtDevice::setResizable that caused window titlebars to hide occasionally under the taskbar in some systems (Ubuntu, Mint).
This was caused by quick calls to XUnmapWindow followed by XMapWindow which some WM's can't handle. 
Adding a long sleep call (~200ms) in between would have been a workaround, but looked ugly as the window is hidden in the meantime.
I found no reference in X11 documentation that unmapping is necessary for this, so I removed those calls now.
Changing the resize flags still works in my tests on Debian and Ubuntu. If it causes problems we have to switch to the ugly hack 
or get certain systems to repair their window managers.



git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@5091 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

 --------------------------
 Changes in 1.9 (not yet released)
 
+- Fix problem in IrrlichtDevice::setResizable on X11 that caused window titlebars to hide occasionally under the taskbar in some systems (Ubuntu, Mint).
 - Added new IRenderTarget interface.
 - Replace the swprintf and snprintf defines by swprintf_irr and snprintf_irr to avoid conflicts with the standard libraries (and other libraries).
 - XBox support removed as it would need DX8 (this was about the original XBox).

source/Irrlicht/CIrrDeviceLinux.cpp

@@ -1475,7 +1475,6 @@ void CIrrDeviceLinux::setResizable(bool resize)
 	if (CreationParams.DriverType == video::EDT_NULL || CreationParams.Fullscreen )
 		return;
 
-	XUnmapWindow(XDisplay, XWindow);
 	if ( !resize )
 	{
 		// Must be heap memory because data size depends on X Server
@@ -1490,7 +1489,6 @@ void CIrrDeviceLinux::setResizable(bool resize)
 	{
 		XSetWMNormalHints(XDisplay, XWindow, StdHints);
 	}
-	XMapWindow(XDisplay, XWindow);
 	XFlush(XDisplay);
 #endif // #ifdef _IRR_COMPILE_WITH_X11_
 }