Fixed copy-paste into RTF editors when text contained backslash.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@1013 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/ICSharpCode.TextEditor/Project/Src/Util/RtfWriter.cs

@@ -144,7 +144,7 @@ namespace ICSharpCode.TextEditor.Util
 										printWord = word.Word;
 									}
 									
-									rtf.Append(printWord.Replace("{", "\\{").Replace("}", "\\}"));
+									rtf.Append(printWord.Replace(@"\", @"\\").Replace("{", "\\{").Replace("}", "\\}"));
 								}
 								offset += word.Length;
 								break;