modified configure to allow configuration of wxMotif under Darwin/Mac OS X

wxWindows can be configured as wxMac or wxMotif under Mac OS X
replaced __WXMAC_X__ define by __DARWIN__ (general Darwin related issues)
moved dlopen/dlerror code to dynlib.cpp to make it available for wxMotif


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@11061 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/filedlg.cpp

@@ -20,7 +20,7 @@
 #include "wx/filedlg.h"
 #include "wx/intl.h"
 
-#if !defined(__UNIX__)
+#ifndef __DARWIN__
   #include "PLStringFuncs.h"
 #endif
 
@@ -30,13 +30,11 @@ IMPLEMENT_CLASS(wxFileDialog, wxDialog)
 
 // begin wxmac
 
-#if defined(__UNIX__)
-  #include <Carbon/Carbon.h>
-#else
+#ifndef __DARWIN__
   #include <Navigation.h>
 #endif
 
-#ifndef __UNIX__
+#ifndef __DARWIN__
   #include "morefile.h"
   #include "moreextr.h"
   #include "fullpath.h"
@@ -546,7 +544,7 @@ wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 }
 
 
-Boolean CrossPlatformFilterCallback (
+pascal Boolean CrossPlatformFilterCallback (
     AEDesc *theItem, 
     void *info, 
     void *callBackUD, 
@@ -751,7 +749,7 @@ int wxFileDialog::ShowModal()
 	  	  }
 	  	}
 
-      mNavFilterUPP = NewNavObjectFilterProc( CrossPlatformFilterCallback ) ;
+      mNavFilterUPP = NewNavObjectFilterUPP( CrossPlatformFilterCallback ) ;
 			if ( m_dialogStyle & wxMULTIPLE )
 				mNavOptions.dialogOptionFlags |= kNavAllowMultipleFiles ;
 			else