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/filedlg.h

@@ -17,7 +17,7 @@ class WXDLLIMPEXP_FWD_CORE wxChoice;
 // wxFileDialog
 //-------------------------------------------------------------------------
 
-// set this system option to 1 in order to always show the filetypes popup in 
+// set this system option to 1 in order to always show the filetypes popup in
 // file open dialogs if possible
 
 #define wxOSX_FILEDIALOG_ALWAYS_SHOW_TYPES wxT("osx.openfiledialog.always-show-types")
@@ -59,7 +59,7 @@ public:
 #if wxOSX_USE_COCOA
     ~wxFileDialog();
 #endif
-    
+
     virtual void GetPaths(wxArrayString& paths) const { paths = m_paths; }
     virtual void GetFilenames(wxArrayString& files) const { files = m_fileNames ; }
 
@@ -71,9 +71,9 @@ public:
 #endif
 
     virtual bool SupportsExtraControl() const;
-    
+
     // implementation only
-    
+
 #if wxOSX_USE_COCOA
     // returns true if the file can be shown as active
     bool CheckFile( const wxString& filename );
@@ -86,7 +86,7 @@ protected:
                            int WXUNUSED(sizeFlags) = wxSIZE_AUTO) {}
 
     void SetupExtraControls(WXWindow nativeWindow);
-    
+
 #if wxOSX_USE_COCOA
     virtual wxWindow* CreateFilterPanel(wxWindow *extracontrol);
     void DoOnFilterSelected(int index);