[vlc] revise "VLC media player for Gentoo Linux"

[zuzu]

the documentation for installing vlc on gentoo gnu/linux with portage
(emerge) requires revision:

at http://www.videolan.org/vlc/download-gentoo.html the recommendation:

"I advice to always use the latest (and 'unstable') version of VLC by
emerging like: ACCEPT_KEYWORDS="~x86" emerge vlc.

When you don't set the correct USE variables, you will get a very bare
bones version of VLC. I advice to emerge with the following USE
variables: dvd nls xv bidi truetype wxwindows imlib matroska faad png.
To add streaming support, add the stream and streamout USE variables."

although the stable ebuild seems stuck at 0.6.0 and what "everyone
really wants" is the "unstable" build (currently 0.8.1), using the
following command (as the documentation currently suggests) is
currently INCORRECT:

# ACCEPT_KEYWORDS="~x86" USE="dvd nls xv bidi truetype wxwindows imlib
matroska faad png stream streamout"


as elaborated at http://forums.gentoo.org/viewtopic.php?t=171464 , the
CORRECT way to achieve the same result (without polluting the ebuild
architecture tree) currently involves the following:

add the following line of text to /etc/portage/package.keywords :
media-video/vlc ~x86

and add the following line of text to /etc/portage/package.use :
media-video/vlc dvd nls xv bidi truetype wxwindows imlib matroska faad
png stream streamout

(as an aside, i also included the use-flag "oggvorbis"; if anyone
knows whether this is redundant or not, please say so.  as far as
suggestions go, i would suggest including the entire xiph/ogg
menagerie.)

this way portage users may 'regenworld' or 'emerge -u world' (or
'emerge -uDav'; upgrade, deep, ask, verbose) without downgrading vlc
to 0.6.0 and without resorting to the polluting (and deprecated)
'emerge -U' command.

hope that helps.  thank you everyone who help make videolan as useful
as it continues to be!

peace,
-z

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