macosx: trust the user that s/he knows what s/he's doing when opening a...

macosx: trust the user that s/he knows what s/he's doing when opening a VIDEO_TS folder (close #6108)

in other words, accept folders which aren't named 'VIDEO_TS'
(cherry picked from commit 0fff26bc5eb641f04b882b6830099b9bd267124b)

modules/gui/macosx/open.m

@@ -759,9 +759,9 @@ static VLCOpen *_o_sharedMainInstance = nil;
             returnValue = kVLCMediaBD;
         else
         {
-            if ([mountPath rangeOfString:@"VIDEO_TS"].location != NSNotFound)
+            if ([mountPath rangeOfString:@"VIDEO_TS" options:NSCaseInsensitiveSearch | NSBackwardsSearch].location != NSNotFound)
                 returnValue = kVLCMediaVideoTSFolder;
-            else if ([mountPath rangeOfString:@"BDMV"].location != NSNotFound)
+            else if ([mountPath rangeOfString:@"BDMV" options:NSCaseInsensitiveSearch | NSBackwardsSearch].location != NSNotFound)
                 returnValue = kVLCMediaBDMVFolder;
             else
             {
@@ -783,7 +783,7 @@ static VLCOpen *_o_sharedMainInstance = nil;
                     }
                 }
                 if(!returnValue)
-                    returnValue = kVLCMediaUnknown;
+                    returnValue = kVLCMediaVideoTSFolder;
             }
         }
 
@@ -901,15 +901,10 @@ static VLCOpen *_o_sharedMainInstance = nil;
     {
         NSString *o_path = [[[o_open_panel URLs] objectAtIndex: 0] path];
         if ([o_path length] > 0 )
-        {
-            if ([o_path rangeOfString:@"VIDEO_TS"].location != NSNotFound || [o_path rangeOfString:@"BDMV"].location != NSNotFound)
         {
             [o_specialMediaFolders addObject: o_path];
             [self scanOpticalMedia: nil];
         }
-            else
-                msg_Dbg( VLCIntf, "chosen directory is no suitable special media folder" );
-        }
     }
 }