StorageAPI, BasicStorageAPI, FullStorageAPI, MinimalStorageAPI classes removed.

MinimalTest greatly simplified.

suite(): use unittest.makeSuite()

BaseFramework, MinimalBaseFrameWork, FullBaseFramework classes
removed.

MinimalDBHomeTest => MinimalCreateTest, and mixin inheritance

FullDBHomeTest => FullCreateTest, and mixin inheritance

suite(): use unittest.makeSuite()

dne => DNE

repeating the substitution.

Why didn't we think of this before?!

some of the security methods.

1. Some browsers don't understand attribute values in single quotes,
   so always use double quotes.

2. An undefined variable was referenced in the error reporting code in
   parseSubstitution().  (The error reporting cannot be reached unless
   _subst_re is changed -- but it is still a bug. :-)

the tracker.

mode opcodes.

Fix check_code_short_endtags(), which should have used <img /> since
the previous batch of changes.