[MacPorts] #37422: Update hdf5-18 to add +gcc47 variant

[MacPorts]

#37422: Update hdf5-18 to add +gcc47 variant
-------------------------+--------------------------------
 Reporter:  johnsonsr@…  |      Owner:  macports-tickets@…
     Type:  update       |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.1.2
 Keywords:               |       Port:  hdf5-18
-------------------------+--------------------------------
 This patch file adds support for the MacPorts GCC 4.7 compiler in addition
 to the other GCC options.

-- 
Ticket URL: <https://trac.macports.org/ticket/37422>
MacPorts <http://www.macports.org/>
Ports system for Mac OS