* macbin/: Mono bindings for Immendio's ige-mac-integration library.

* bunde-mac-app.sh:
* osx/: Support for building an app bundle for OS X.

* Tomboy/Tomboy.addin.mac.xml:
* prebuild.sh: Use a modified add-in manifest file for Mac.

* Tomboy.mac.sln:
* Tomboy.mac.csproj:
* Tomboy/Addins/*/*.mac.csproj: Fixes to Mac-specific MD projects.

* Tomboy/WindowsApplication.cs: Mark everything virtual.
* Tomboy/MacApplication.cs: Subclass WindowsApplication, add
  Mac menu bar and dock integration.
* Tomboy/MacFactory.cs: Use MacApplication.

* Tomboy/Tray.cs: Expose ITomboyTray. #if MAC, hide Tray icon. Hacky.
* Tomboy/Notebooks/NotebookApplicationAddin.cs: #if MAC hacks to work
  around issues with Mac menu bar integration.
 Tomboy/Tomboy.cs: Fix AboutDialog to properly show Tomboy website as
  clickable URL. #if !MAC code that shows Search if Tray doesn't appear.
* Tomboy/RecentChanges.cs: #if !MAC code to keep menu out of Search
  window, and to prevent quitting Tomboy when Search window closes just
  because Tray icon isn't Visible.
  
* Tomboy/NoteBuffer.cs: #if !MAC code to prevent use of \u2218 as
  a bullet symbol, as it doesn't appear to be available by default

svn path=/trunk/; revision=2229