src/playlist/loadsave.c, modules/demux/playlist/*, modules/gui/*,

modules/misc/playlist/*, modules/access/http.c: XSPF playlist support
(read and write) by Daniel Stranger. Many thanks

src/misc/modules.c, src/misc/strings.c, include/vlc_strings.h: string
handling functions.

modules/control/http/*, modules/services_discovery/upnp_intel.cpp: use
these string handling functions.