1. GetCwd() now has the volume argument, Normalize() works correctly for the

paths without full path but with the volume
2. fixed old SplitPath() version without volume to behave in a backwards
   compatible way
3. added more docs


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12784 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/filename.h

@@ -189,8 +189,8 @@ public:
     // various file/dir operations
 
         // retrieve the value of the current working directory
-    void AssignCwd();
-    static wxString GetCwd();
+    void AssignCwd(const wxString& volume = wxEmptyString);
+    static wxString GetCwd(const wxString& volume = wxEmptyString);
 
         // change the current working directory
     bool SetCwd();
@@ -321,10 +321,7 @@ public:
                           wxString *path,
                           wxString *name,
                           wxString *ext,
-                          wxPathFormat format = wxPATH_NATIVE)
-    {
-        SplitPath(fullpath, NULL, path, name, ext, format);
-    }
+                          wxPathFormat format = wxPATH_NATIVE);
 
 private:
     // the drive/volume/device specification (always empty for Unix)