FIX do not return ${APPDATA}/.config when looking for appdata

Also, if the config directory doesn't exist, try to create it,
for systems where .config isn't automatically created.

runsnakerun/homedirectory.py

@@ -67,13 +67,21 @@ def appdatadirectory():
     ## default case, look for name in environ...
     for name in ['APPDATA', 'HOME']:
         if name in os.environ:
+            if name == 'APPDATA':
+                return os.environ[name]
             return os.path.join(os.environ[name], RELATIVE_CONFIG)
     # well, someone's being naughty, see if we can get ~ to expand to a directory...
     possible = os.path.abspath(os.path.expanduser('~/%s'%(RELATIVE_CONFIG,)))
     if os.path.exists(possible):
         return possible
+    try:
+        os.makedirs(possible)
+    except Exception:
+        pass
     raise OSError(
-        """Unable to determine user's application-data directory, no ${HOME} or ${APPDATA} in environment"""
+        """Unable to determine user's application-data directory, no ${HOME} or ${APPDATA} in environment, unable to create %s"""%(
+            possible,
+        )
     )