[MacPorts] #47578: mkvtoolnix: upgrade to 7.8.0

[MacPorts]

#47578: mkvtoolnix: upgrade to 7.8.0
-------------------------+--------------------------------
  Reporter:  mojca@…     |      Owner:  macports-tickets@…
      Type:  update      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  mkvtoolnix  |
-------------------------+--------------------------------

Comment (by ryandesign@…):

 Replying to [ticket:47578 mojca@…]:
 > I'm attaching a patch for upgrading `mkvtoolnix` to 7.8.0. I would
 appreciate if someone on 10.9 or later could test it.

 It fails on 10.10:

 {{{
 In file included from src/common/utf8_codecvt_facet.cpp:22:
 src/common/../../lib/boost/utf8_codecvt_facet/utf8_codecvt_facet.cpp:174:5:
 fatal error: unknown type name 'BOOST_CODECVT_DO_LENGTH_CONST'
     BOOST_CODECVT_DO_LENGTH_CONST std::mbstate_t &,
     ^
 1 error generated.
 }}}

 I don't see any occurrences of `BOOST_CODECVT_DO_LENGTH_CONST` in the
 boost port. Maybe this was removed from boost at some point.

-- 
Ticket URL: <https://trac.macports.org/ticket/47578#comment:1>
MacPorts <https://www.macports.org/>
Ports system for OS X