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Missing some cases that I could not test.
Also ffmpeg/chroma.c is locked, so I can but leave it broken.
Fix is for the remaining modules is obvious and the issue is easy to detect.

Qt4 - Put the dialog you are not likely to use during playback as QDialogs, meaning centered on MainInterface.
VLM, Preferences, Errors, Podcast_Conf, GotoTime, Help.

Qt4 - Podcast dialog: Don't use the default OK/Cancel buttons, because they wouldn't be translated if we do it the default way. This does almost the same output.