Clean Up Setup.py Before Publish

`setup.py` will now automatically detect support for Cython and
compile with Cython when available.  Otherwise, it will try to
compile with the C files.  `MANIFEST.in` now keeps the C files
along with the Cython files, so that running `setup.py sdist`
will keep the C files in the generated source distribution.

Finally, the "author" of the project has been changed to
"The Python GSSAPI Team".  The license has been updated to
reflect this.  The actual license itself has been changed into
a more streamlined ISC license.

Author: DirectXMan12

LICENSE.txt

@@ -1,9 +1,5 @@
-Copyright (c) 2013, Solly Ross
-All rights reserved.
+Copyright (c) 2014, The Python GSSAPI Team
 
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
 
-* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
-* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

MANIFEST.in

@@ -1,6 +1,4 @@
 include *.txt
 recursive-include docs *.txt
-
-recursive-include sys_src *.h
-
 recursive-include gssapi *.pxd
+recursive-include gssapi *.c

setup.py

@@ -1,11 +1,17 @@
 #!/usr/bin/env python
-from setuptools import setup, Feature  # noqa
+from setuptools import setup
+from setuptools.command.build_ext import build_ext
 from setuptools.extension import Extension
-from Cython.Distutils import build_ext
-import sys  # noqa
 import re
 import os
 
+
+try:
+    from Cython.Build import cythonize
+    SOURCE_EXT = 'pyx'
+except ImportError:
+    SOURCE_EXT = 'c'
+
 get_output = None
 
 try:
@@ -83,7 +89,7 @@ def main_file(module):
     return Extension('gssapi.raw.%s' % module,
                      extra_link_args=link_args,
                      extra_compile_args=compile_args,
-                     sources=['gssapi/raw/%s.pyx' % module])
+                     sources=['gssapi/raw/%s.%s' % (module, SOURCE_EXT)])
 
 
 def extension_file(module, canary):
@@ -93,7 +99,8 @@ def extension_file(module, canary):
         return Extension('gssapi.raw.ext_%s' % module,
                          extra_link_args=link_args,
                          extra_compile_args=compile_args,
-                         sources=['gssapi/raw/ext_%s.pyx' % module])
+                         sources=['gssapi/raw/ext_%s.%s' % (module,
+                                                            SOURCE_EXT)])
 
 
 def gssapi_modules(lst):
@@ -106,7 +113,11 @@ def gssapi_modules(lst):
         res.append(Extension('gssapi.raw.mech_%s' % mech,
                              extra_link_args=link_args,
                              extra_compile_args=compile_args,
-                             sources=['gssapi/raw/mech_%s.pyx' % mech]))
+                             sources=['gssapi/raw/mech_%s.%s' % (mech,
+                                                                 SOURCE_EXT)]))
+
+    if SOURCE_EXT == 'pyx':
+        res = cythonize(res)
 
     return res
 
@@ -116,9 +127,9 @@ def gssapi_modules(lst):
                                  open('README.txt').read())))
 
 setup(
-    name='PyGSSAPI',
+    name='PythonGSSAPI',
     version='1.0.0',
-    author='Solly Ross',
+    author='The Python GSSAPI Team',
     author_email='sross@redhat.com',
     packages=['gssapi', 'gssapi.raw', 'gssapi.tests'],
     description='Python GSSAPI Wrapper',
@@ -128,12 +139,13 @@ def gssapi_modules(lst):
     classifiers=[
         'Development Status :: 4 - Beta',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.3',
         'Intended Audience :: Developers',
-        'License :: OSI Approved :: BSD License',
+        'License :: OSI Approved :: ISC License (ISCL)',
         'Programming Language :: Python :: Implementation :: CPython',
+        'Programming Language :: Cython',
         'Topic :: Security',
         'Topic :: Software Development :: Libraries :: Python Modules'
     ],
@@ -153,6 +165,7 @@ def gssapi_modules(lst):
         extension_file('cred_store', 'gss_store_cred_into'),
         extension_file('rfc5588', 'gss_store_cred'),
     ]),
+    keywords=['gssapi', 'security'],
     install_requires=[
         'enum34',
         'decorator'