[MacPorts] #55926: Add C++11 variant to Boost

[MacPorts]

#55926: Add C++11 variant to Boost
--------------------------+------------------------------------
  Reporter:  michaelld    |      Owner:
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  boost, c++11, haspatch
      Port:  boost        |
--------------------------+------------------------------------
Changes (by michaelld):

 * Attachment "Boost_add_cxx11.diff" added.


--
Ticket URL: <https://trac.macports.org/ticket/55926>
MacPorts <https://www.macports.org/>
Ports system for macOS