pkg/48053: multimedia/vlc only compiles with clang

[prlw1%cam.ac.uk@localhost]

>Number:         48053
>Category:       pkg
>Synopsis:       multimedia/vlc doesn't compile with gcc
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jul 15 09:00:00 +0000 2013
>Originator:     Patrick Welche
>Release:        NetBSD 6.99.23/amd64
>Organization:
>Environment:
gcc version 4.5.4 (NetBSD nb1 20120916) 
>Description:

According to
http://mail-index.netbsd.org/pkgsrc-bulk/2013/07/13/msg009818.html
multimedia/vlc compiles successfully with clang, but with the gcc
in -current, compilation fails with:

  CXX      libmkv_plugin_la-matroska_segment.lo
In file included from /usr/include/g++/clocale:44:0,
                 from /usr/include/g++/bits/c++locale.h:42,
                 from /usr/include/g++/bits/localefwd.h:42,
                 from /usr/include/g++/ios:42,
                 from /usr/include/g++/ostream:40,
                 from /usr/include/g++/iostream:40,
                 from mkv.hpp:59,
                 from util.hpp:26,
                 from util.cpp:25:
../../../include/vlc_fixups.h:192:20: error: previous declaration of 'void freel
ocale(_locale*)' with 'C++' linkage
/usr/include/locale.h:105:26: error: conflicts with new declaration with 'C' lin
kage
../../../include/vlc_fixups.h:196:24: error: previous declaration of '_locale* n
ewlocale(int, const char*, _locale*)' with 'C++' linkage
/usr/include/locale.h:107:47: error: conflicts with new declaration with 'C' lin
kage

>How-To-Repeat:
Build multimedia/vlc with gcc. vlc2 has its own PRs, so isn't a workaround.
>Fix: