boost 1.36 removed the branch functions. work around it.
boost 1.36 removed the branch functions. work around it.

boost-filesystem-1.35 only has the *branch* functions. boost-1.36 only has
the *parent* functions. boost-1.37+ re-adds the *branch* functions and
wraps them in BOOST_FILESYSTEM_NO_DEPRECATED (which is off by default, so
the branch functions are there).

Anyway. This wraps the function in question in a BOOST_VERSION check. Grr.

DougFirErickson/visionworkbench,AveRapina/visionworkbench,AveRapina/visionworkbench,DougFirErickson/visionworkbench,DougFirErickson/visionworkbench,fengzhyuan/visionworkbench,AveRapina/visionworkbench,AveRapina/visionworkbench,fengzhyuan/visionworkbench,fengzhyuan/visionworkbench,DougFirErickson/visionworkbench,fengzhyuan/visionworkbench,fengzhyuan/visionworkbench,fengzhyuan/visionworkbench,AveRapina/visionworkbench,DougFirErickson/visionworkbench,AveRapina/visionworkbench,DougFirErickson/visionworkbench,fengzhyuan/visionworkbench