Revert "base64 test 2"

This reverts commit 7c4289336755f288c770836016bac93df8971eeb.
Revert "base64 test"

This reverts commit 3a2c079625da26f1fd0bab8369115cf5bc7c385d.
Revert "tweaked base64 decoding"

This reverts commit 044667358855c929f283ba5b4f5682fae0b8e286.