Working transition to xcb, add -duse_xcb parameter for compiling to have a xcb application.(2)

Author: fredvs

lib/common/opengl/mseglx.pas

@@ -39,7 +39,7 @@ interface
 {$ifdef linux}{$define unix}{$endif}
 {$IFDEF Unix}
   uses
-    {$ifdef FPC}mx,{$endif} mxlib,{$ifdef FPC} mxutil,{$endif}mseglextglob;
+   mxlib, mseglextglob;
   {$DEFINE HasGLX}  // Activate GLX stuff
 {$ELSE}
   {$MESSAGE Unsupported platform.}

lib/common/opengl/mseopenglwidget.pas

@@ -177,7 +177,7 @@  topenglwidget = class(tcustomopenglwidget)
 
 implementation
 uses
- sysutils{$ifdef unix}{$ifdef FPC},mxutil{$endif}{$endif},mseglextglob;
+ sysutils,mseglextglob;
 
 { tcustomopenglwidget }