- Remove old NULL kludge

Restored Makefile.am and added a test for cross-compiling in configure.ac. The LIBGCRYPT macro didn't test for the cross-compile situation.

* luaplaylist.c, README.txt: add .duration option for playlist items. Should now be possible to rewrite our m3u parser entirely in Lua :D
* m3u.c: indentation fix.

* *.lua: misc fixes.

* share/luaplaylist/youtube_homepage.lua: New lua parser script to open youtube home/browse pages. This demos the ability to return more than one item in lua playlist scripts.

* ffmpeg/demux.c: Don't change an ffmpeg demux's .flags member permanently. Fixes the "ffmpeg demuxer can't be used more that once" bug with libavformat revisions newer than 7589 (included).

* luaplaylist.c: Look for Lua scripts in the user's CONFIG_DIR"/luaplaylist" directory too. (+ fix probable compilation errors on WIN32, APPLE and BEOS)

* modules/access/http.c: When redirecting, don't include port number in URL if it's using the default port.

* src/input/input.c: Remove the access and demux part from the path string. (Fixes [20059] a bit ... even though it wasn't really broken)

* luaplaylist.c: add vlc.msg_{info,err,warn,dbg}() functions. register the vlc.read() and vlc.readline() for parse() only (so that they can't be used in the probing phase)
* share/luaplaylist/*: move help to README.txt

* ps.c: Change demux2 capability from 9 to 8
* ty.c: Change demux2 capability from 8 to 6
* playlist/{Modules.am,playlist.c,videoportals.c}: remove video portals C version

* luaplaylist.c: add support for meta data info. Playlist items now use .path and .name (instead of .url and .title as those are used for meta data).
* luaplaylist/dailymotion.lua: add support for "description" and "arturl" meta data items.
* luaplaylist/*lua: update source to make it work with new playlist conventions.
* luaplaylist/youtube.lua: update help instructions.

* luaplaylist.c: should now look in the appropriate directory if VLC is installed. + add vlc.read() function.