Added the ability to get the message index number

Source/CTCoreMessage.h

@@ -86,6 +86,11 @@
 */
 - (NSString *)uid;
 
+/*!
+	@abstract	Returns the message index, this number cannot be used across sessions
+*/
+- (NSUInteger)indexNumber;
+
 /*!
 	@abstract	Parses the from list, the result is an NSSet containing CTCoreAddress's
 */

Source/CTCoreMessage.m

@@ -164,6 +164,10 @@
 	return [NSString stringWithCString:myMessage->msg_uid encoding:NSASCIIStringEncoding];
 }
 
+- (NSUInteger)indexNumber {
+	return myMessage->msg_index;
+}
+
 
 - (NSSet *)from {
 	if (myFields->fld_from == NULL)