Ironruby core - Jul 2009 - [Code Review] Various SL and tutorial fixes

Note: all commits are in dev/filesoox branch. Once reviewed I will rebase them
into master, and then they can be pulled into ironruby/ironruby.

http://github.com/jschementi/ironruby/commit/6fd607b30e82aad4fd4fad09906f6385ff98c9fa
Various SL and Tutorial fixes
- Fix bug where an entryPoint isn''t found when specified in initParams
and using downloadScripts.
- Tutorial now runs with downloadScripts, just as a test case.
- Tutorial header and chapter navigations have the same animations that they had
on the desktop
- Tutorial chapter navigation works again
   o adds System.Windows.Controls.dll for TreeView in SL, and
System.Windows.Controls.Toolkit.dll for a TreeViewExtensions.ExpandAll
- wpf.rb extends FrameworkElement to look for resources by x:name as well as
children element

http://github.com/jschementi/ironruby/commit/4a7d5d6982d50cbc6c4895817759e90993368d42
Script for rewriting project files so they build in Visual C# Express
- Note: it is preferred you not do this, and just build from the command line
(if you can''t find msbuild, it is in
%windir%\Microsoft.NET\Framework\v3.5)

http://github.com/jschementi/ironruby/commit/308eccad1422d8bcf72d7d11c3573fda983ad5af
Tutorial: Clear chapters TreeView every time a tutorial is started

http://github.com/jschementi/ironruby/commit/963b9e14c8744f5a786f870b31844352547ab49e
Fixes for Moonlight (http://monoport.com/39313 and http://monoport.com/39314)