Print conda config --get list items in reverse order

This will not match the order in the rc file, but it will make it so that
adding the printed options in the same order will recreate the same order as
the rc file.

conda/cli/main_config.py

@@ -105,7 +105,10 @@ def execute(args, parser):
         if isinstance(rc_config[key], bool):
             print "--set", key, rc_config[key]
         else:
-            for item in rc_config.get(key, []):
+            # Note, since conda config --add prepends, these are printed in
+            # the reverse order so that entering them in this order will
+            # recreate the same file
+            for item in reversed(rc_config.get(key, [])):
                 # Use repr so that it can be pasted back in to conda config --add
                 print "--add", key, repr(item)