''Really'' fix the $HWLOC_PKG_CONFIG --> $PKG_CONFIG issue.  Don't just rename it in HWLOC_PKG_PROG_PKG_CONFIG, but everywhere throughout hwloc_pkg.m4.  
''Really'' fix the $HWLOC_PKG_CONFIG --> $PKG_CONFIG issue.  Don't
just rename it in HWLOC_PKG_PROG_PKG_CONFIG, but everywhere throughout
hwloc_pkg.m4.  


git-svn-id: 14be032f8f42541b1a281b51ae8ea69814daf20e@4030 4b44e086-7f34-40ce-a3bd-00e031736276

BlueBrain/hwloc,BlueBrain/hwloc,BlueBrain/hwloc,BlueBrain/hwloc