Move multimedia/avidemux26-* to multimedia/avidemux-*

Update to upstream version 2.6.10

multimedia/libvpx: update to 1.4.0

ABI isn't compatible, so bump PORTREVISION in consumers.

Changes:	https://chromium.googlesource.com/webm/libvpx/+/v1.4.0
Differential Revision:	https://reviews.freebsd.org/D2570
Exp-run by:	antoine
Approved by:	ashish, multimedia (kwm)
Approved by:	maintainer timeout (ale, dinoex; 2 weeks)

Update to upstream version 2.6.9

While on it:
Pet portlint

PR:		200507
Reported by:	venture37@geeklan.co.uk

multimedia category: Remove $PTHREAD_LIBS

approved by:	PTHREAD blanket

Change libpng15.so to libpng.so in LIB_DEPENDS to prepare the upgrade

Remove useless gnomehack

Fix my plist mess up

Reported by:	antoine

Cleanup plist

Avoid using @cwd

Replace USES=libtool:oldver with USES=libtool or USES=libtool:keepla in
the 32 ports that still use it.  Bump PORTREVISION on their dependent
ports except the ones that depend on these:

audio/libogg
audio/libvorbis
devel/pcre
ftp/curl
graphics/jpeg
graphics/libart_lgpl
graphics/tiff
textproc/expat2
textproc/libxslt

In these cases the same trick as in the recent gettext update is used.

multimedia/x264: General overhaul

- Split x264 into two ports: the CLI application (x264), and the library
  (libx264). This will allow x264 to use lavf and friends from ffmpeg for
  decoding and demuxing while preventing a circular dependency between the
  two: x264 can depend on ffmpeg, but ffmpeg will depend on libx264 rather
  than x264.
- Add the LAVF option to the CLI port, making the dependency on ffmpeg
  optional.
- Update to 0.142.2455.
- Amend fixes to local patches so that they can apply to the new upstream
  files.
- Provide the git revision and other version information to the build
  environment, allowing the CLI binary to display this information (like the
  Windows builds).
- Remove unsupported build options (X11_OUTPUT).
- Ensure that the library and CLI ports each have the appropriate options.
- Add notes for future contributors who wish to update the ports.
- Bump PORTREVISION for all dependent ports.

PR:           187805
Differential Revision:	https://reviews.freebsd.org/D1159
Submitted by: Andrew Berg <aberg010@my.hennepintech.edu>
Approved by:  koobs (maintainer, mentor)

Update the default version of GCC in the Ports Collection from GCC 4.7.4
to GCC 4.8.3.

Part II, Bump PORTREVISIONs.

PR:		192025
Tested by:	antoine (-exp runs)
Approved by:	portmgr (implicit)

Bump PORTREVISION on all ports with USE_SQLITE=yes or USE_SQLITE=3 that
have not been bumped yet after the latest libsqlite3.so library version
change.

Approved by:	portmgr (implicit)

- Finally import avidemux 2.6.8 as new ports multimedia/avidemux26*,
  repocopied from the 2.5.6 ports multimedia/avidemux2 (left in
  the tree for now for people that want a gtk ui etc.)
- Set CONFLICTS as only one avidemux version can be installed at a time.
- Don't import the 2.6.8 gtk ui as it crashes at startup and apparently
  is abandoned upstream.  (In the unlikely case that someone wants to fix
  it, it is available at my redports tree.)
- As with the old version start by installing multimedia/avidemux26-plugins,
  it is needed and depends on the other ports.
- (portlint is still not happy but I guess it cannot know everything...)

Submitted by:	frogs <4721@hushmail.com> (initial port)