Remove all trailing spaces

No real changes, just clean up sources by removing trailing spaces from
all the non-generated files.

This should hopefully avoid future commits mixing significant changes
with insignificant whitespace ones.

include/wx/osx/core/colour.h

@@ -47,10 +47,10 @@ public:
 
     // This ctor does take ownership of the color.
     wxColour( CGColorRef col );
-    
+
     // don't take ownership of the returned value
     CGColorRef GetCGColor() const;
-    
+
     // do take ownership of the returned value
     CGColorRef CreateCGColor() const { return wxCFRetain(GetCGColor()); }
 
@@ -69,7 +69,7 @@ public:
     explicit wxColour(WX_NSColor color);
     WX_NSColor OSXGetNSColor() const;
 #endif
- 
+
 protected :
     virtual void
     InitRGBA(ChannelType r, ChannelType g, ChannelType b, ChannelType a) wxOVERRIDE;
@@ -87,19 +87,19 @@ class wxColourRefData : public wxGDIRefData
 public:
     wxColourRefData() {}
     virtual ~wxColourRefData() {}
-    
+
     virtual CGFloat Red() const = 0;
     virtual CGFloat Green() const = 0;
     virtual CGFloat Blue() const = 0;
     virtual CGFloat Alpha() const = 0;
- 
+
     virtual bool IsSolid() const
         { return true; }
 
     virtual CGColorRef GetCGColor() const = 0;
-    
+
     virtual wxColourRefData* Clone() const = 0;
-    
+
 #if wxOSX_USE_COCOA
     virtual WX_NSColor GetNSColor() const;
 #endif