Patch Sinatra 0.9.1.1 to work with IronRuby

sinatra-0.9.4.patch

--- a/sinatra-0.9.4/lib/sinatra/base.rb	Tue Aug 18 21:10:44 2009
+++ b/sinatra-0.9.4/lib/sinatra/base.rb	Tue Aug 18 22:52:03 2009
@@ -957,6 +957,14 @@
         /active_support/,      # active_support require hacks
       ] unless self.const_defined?('CALLERS_TO_IGNORE')
 
+      unless self.const_defined?('RUBY_IGNORE_CALLERS')
+        IRONRUBY_IGNORE_CALLERS = [
+          /\.cs/,              # C# stack traces that shows up in debug mode
+          /$^/                 # .NET stack traces that shows up in release mode are without the filename
+        ] 
+        RUBY_IGNORE_CALLERS = IRONRUBY_IGNORE_CALLERS
+      end
+
       # add rubinius (and hopefully other VM impls) ignore patterns ...
       CALLERS_TO_IGNORE.concat(RUBY_IGNORE_CALLERS) if defined?(RUBY_IGNORE_CALLERS)