BF: provide env for exec in setup.py

Author: yarikoptic

setup.py

@@ -248,7 +248,7 @@ def _package_status(pkg_name, version, version_getter, checker):
 
 # Get version and release info, which is all stored in nipype/info.py
 ver_file = os.path.join('nipype', 'info.py')
-exec(open(ver_file).read())
+exec(open(ver_file).read(), locals())
 
 # Prepare setuptools args
 if 'setuptools' in sys.modules: