The file is the pyconfoigure m4 macros patch that solves tyhe python3 bug and add macro to check a module version number ( refs #140 )

Now their is 2 macros :
 - PC_PYTHON_CHECK_MODULE_MATCH_VERSION(LIBRARY, VERSION, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND)
 - PC_PYTHON_CHECK_MODULE_VERSION(LIBRARY, MIN-VERSION, MAX-VERSION, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND)

Using $pkgpythondir instead of $pythondir in Makefile.am
Solves a bug that put installed files in site-packages instead of dist-packages on debian