handle setuptools magic (closes #26)

Author: afflux

setup.py

@@ -16,10 +16,22 @@
 #    You should have received a copy of the GNU Lesser General Public License
 #    along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
-from distutils.command.install import install
-from distutils.command.install_lib import install_lib
-from distutils.core import setup
-from distutils.sysconfig import get_config_vars
+args = {}
+try:
+    from setuptools import setup
+
+    from setuptools.command.install import install
+    from setuptools.command.install_lib import install_lib
+
+    args['install_requires']=['pycrypto>=2.1']
+except ImportError:
+    print '\n*** setuptools not found! Falling back to distutils\n\n'
+    from distutils.core import setup
+
+    from distutils.command.install import install
+    from distutils.command.install_lib import install_lib
+
+
 import os.path
 
 class gajimpath_install(install):
@@ -153,4 +165,6 @@ def install(self):
         ],
 
     cmdclass={'install_lib':checked_install_lib, 'install':gajimpath_install},
+
+    **args
 )