Pullup ticket #3856 - requested by bsiegert
audio/libaudiofile: build fix

Revisions pulled up:
- audio/libaudiofile/hacks.mk                                  1.1

---
  Module Name:    pkgsrc
  Committed By:  bsiegert
  Date:          Mon Jul  9 16:42:37 UTC 2012

  Added Files:
          pkgsrc/audio/libaudiofile: hacks.mk

  Log Message:
  The build system uses -fvisibility=hidden and -fvisibility-inlines-hidden
  without checking if they are supported. Disable them via BUILDLINK_TRANSFORM
  for MirBSD. Unbreaks the build.

(tron)