Fix utility to use Platform.SupportDir (#1067); drop the --SupportDir arg and the path passed to --settings-value; Update OSX launcher to match.

OpenRA.Launcher.Mac/Controller.m

@@ -74,7 +74,6 @@ extern char **environ;
 	
     NSMutableArray *taskArgs = [NSMutableArray arrayWithObjects:@"OpenRA.Utility.exe",
 								@"--settings-value",
-								[@"~/Library/Application Support/OpenRA" stringByExpandingTildeInPath],
 								@"Graphics.Mode", nil];
 	
     [task setCurrentDirectoryPath:gamePath];
@@ -91,7 +90,7 @@ extern char **environ;
 										 defaultButton:@"Quit"
 									   alternateButton:nil
 										   otherButton:nil
-							 informativeTextWithFormat:@"OpenRA.Utility.exe returned an error and cannot continue."];
+							 informativeTextWithFormat:@"OpenRA.Utility returned an error and cannot continue.\n\nA log has been saved to ~/Library/Application Support/OpenRA/Logs/utility.log"];
 		
         [alert runModal];
 		[[NSApplication sharedApplication] terminate:self];
@@ -115,7 +114,6 @@ extern char **environ;
 					 gamePath,
 					 monoPath,
 					 [NSString stringWithFormat:@"UtilityPath=%@", [[NSBundle mainBundle] executablePath]],
-					 [NSString stringWithFormat:@"SupportDir=%@",[@"~/Library/Application Support/OpenRA" stringByExpandingTildeInPath]],
 					 nil];
 	FSRef appRef;
 	CFURLGetFSRef((CFURLRef)[NSURL URLWithString:[[[NSBundle mainBundle] executablePath] stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding]], &appRef);

OpenRA.Launcher.Mac/main.m

@@ -13,7 +13,7 @@ int main(int argc, char *argv[])
 {
 	/* When launching a mod, the arguments are of the form 
 	 * --launch <game dir> <mono path> <utility path> <support dir option> <mod option> */
-	if (argc >= 7 && strcmp(argv[1], "--launch") == 0)
+	if (argc >= 6 && strcmp(argv[1], "--launch") == 0)
 	{
 		/* Change into the game dir */
 		chdir(argv[3]);
@@ -24,7 +24,6 @@ int main(int argc, char *argv[])
 			"--debug",
 			"OpenRA.Game.exe",
 			argv[5],
-			argv[6],
 			NULL
 		};