Allow applications that use the SharpDevelop core to detect if the property service has been initialized, when there are no addins in the system.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@1701 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Main/Core/Project/Src/Services/PropertyService/PropertyService.cs

@@ -23,6 +23,14 @@ namespace ICSharpCode.Core
 		
 		static Properties properties;
 		
+		public static bool Initialized
+		{
+			get
+			{
+				return properties != null;
+			}
+		}
+
 		public static void InitializeService(string configDirectory, string dataDirectory, string propertiesName)
 		{
 			if (properties != null)