Added extra filename extensions to be supported by the XmlFoldingParser. Folds were only being updated for files with an .xml extension.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@554 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/DisplayBindings/XmlEditor/Project/XmlEditor.addin

@@ -21,7 +21,7 @@
 	<!-- Xml parser used to initiate the folding update -->
 	<Path name = "/Workspace/Parser">
 		<Parser id = "XmlFoldingParser"
-		        supportedextensions  = ".xml"
+		        supportedextensions  = ".xml;.xsl;.xslt;.xsd;.manifest;.config;.addin;.xshd;.wxs;.proj;.build;.xfrm"
 		        class = "ICSharpCode.XmlEditor.Parser"/>
 	</Path>