Optimize rev-list parsing

This uses the C fgets() over the weird readLine implementation I found.
It speeds up the rev-parsing significantly: we went from ~4.5 seconds
on the git.git repo to ~0.95 seconds. And that's with the secret new date
parsing!

ApplicationController.m

@@ -224,9 +224,7 @@
 {
 	if (![[aTableColumn identifier] isEqualToString:@"subject"])
 		return;
-	
-	NSLog(@"Doing cell at index: %i", rowIndex);
-	
+
 	NSNumber* n = [NSNumber numberWithInt:(rowIndex % 2)];
 	[aCell setCommit:n];