Scons: refine the usage of distutils by respecting site-packages location for specific arch's, use the get_python_version() helper, and normpath() to avoid double '/' - addresses #219 and furthers #209
Scons: refine the usage of distutils by respecting site-packages location for specific arch's, use the get_python_version() helper, and normpath() to avoid double '/' - addresses #219 and furthers #209

git-svn-id: 5adfda8227e14e59fd47d5bd9925a30df16fed74@878 d397654b-2ff0-0310-9e29-ba003691a0f9

makinacorpus/mapnik2,makinacorpus/mapnik2,craigds/mapnik2,makinacorpus/mapnik2,craigds/mapnik2,craigds/mapnik2,makinacorpus/mapnik2,craigds/mapnik2