Fix for python distutils install

src/python/setup.py.tpl

 #!/usr/bin/env python
 
 from distutils.core import setup
-import os.path
-import sys
-
-setup_path = os.path.dirname(os.path.abspath(sys.argv[0]))
-lib_path = os.path.abspath(os.path.join(setup_path,'../../lib'))
 
 setup(name='flann',
       version='@FLANN_VERSION@',
@@ -15,6 +10,6 @@ setup(name='flann',
       license='BSD',
       url='http://www.cs.ubc.ca/~mariusm/flann/',
       packages=['pyflann', 'pyflann.io', 'pyflann.bindings', 'pyflann.util', 'pyflann.lib'],
-      package_dir={'pyflann.lib':lib_path},
+      package_dir={'pyflann.lib':'@LIBRARY_OUTPUT_PATH@'},
       package_data={'pyflann.lib': ['libflann.so','flann.dll', 'libflann.dylib']}, 
 )