Merge pull request osmcode#75 from adamfranco/macports-boost-setup

Find libboost_python3-mt.dylib installed by MacPorts

Author: lonvia

setup.py

@@ -96,6 +96,8 @@ def find_includes(libname, chk_file=None, prefix=None, version_postfix=None):
              "-%d.%d" % (pyversion.major, pyversion.minor),
              # Darwin
              "%d%d" % (pyversion.major, pyversion.minor),
+             # Darwin installed by MacPorts
+             "%d-mt" % (pyversion.major),
              # standard suffix for Python3
              "%d" % (pyversion.major),
              # standard naming