* tuiSourceWin.c (tuiSetHasBreakAt): Use filename for breakpoint

	* tuiSourceWin.c (tuiSetHasBreakAt): Use filename for breakpoint
	comparison; cleanup.
	* tuiSource.c (tuiSetSourceContent): Set window title and filename.
	* tuiGeneralWin.c (boxWin): Print optional title on top of window.
	* tuiData.h (TuiSourceInfo): Add filename member.
	(TuiGenWinInfo): Add title member.
	* tuiData.c (initGenericPart): Clear title.
	(freeWindow): Free title and filename; remove unused locals.
	(initWinInfo): Clear filename.
	(tuiDelWindow): Free it; remove unused locals.