Merge SOC2009_FSWATCHER branch into trunk.

Merges everything from the branch with only some minor changes, mostly renamed
wxUSE_FSWATCHER_{INOTIFY,KQUEUE} to wxHAS_{INOTIFY,KQUEUE}.

Add wxFileSystemWatcher and related classes.

Also introduces wxEventLoopSource.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62474 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/osx/cocoa/evtloop.h

@@ -11,9 +11,11 @@
 #ifndef _WX_OSX_COCOA_EVTLOOP_H_
 #define _WX_OSX_COCOA_EVTLOOP_H_
 
-class WXDLLIMPEXP_CORE wxGUIEventLoop : public wxEventLoopManual
+class WXDLLIMPEXP_BASE wxGUIEventLoop : public wxEventLoopManual
 {
 public:
+    typedef wxMacEventLoopSource Source;
+
     wxGUIEventLoop();
 
     // implement/override base class pure virtual
@@ -24,6 +26,31 @@ public:
     virtual void WakeUp();
     virtual bool YieldFor(long eventsToProcess);
 
+#if wxUSE_EVENTLOOP_SOURCE
+    virtual wxMacEventLoopSource* CreateSource() const
+    {
+        return new wxMacEventLoopSource();
+    }
+
+    virtual wxMacEventLoopSource* CreateSource(int res,
+                                           wxEventLoopSourceHandler* handler,
+                                           int flags) const;
+
+    virtual wxMacEventLoopSource* CreateSource(CFRunLoopSourceRef res,
+                                           wxEventLoopSourceHandler* handler,
+                                           int flags) const
+    {
+        return new wxMacEventLoopSource(res, handler, flags);
+    }
+#endif
+
+protected:
+#if wxUSE_EVENTLOOP_SOURCE
+    // adding/removing sources
+    virtual bool DoAddSource(wxAbstractEventLoopSource* source);
+    virtual bool DoRemoveSource(wxAbstractEventLoopSource* source);
+#endif
+
 private:
     double m_sleepTime;
 };