Add decent constants for python for return of getenforce call.

libselinux/src/selinuxswig_python.i

@@ -10,6 +10,10 @@
 
 import shutil, os, stat
 
+DISABLED = -1
+PERMISSIVE = 0
+ENFORCING = 1
+
 def restorecon(path, recursive=False):
     """ Restore SELinux context on a given path """
 
@@ -74,6 +78,10 @@ def install(src, dest):
   $1 = &temp;
 }
 
+%typemap(in, numinputs=0) void *(char *temp=NULL) {
+	$1 = temp;
+}
+
 /* Makes security_compute_user() return a Python list of contexts */
 %typemap(argout) (security_context_t **con) {
 	PyObject* plist;