Pre-allocate the default class attribute for default types.
Fixed pre-allocation of default class attribute (renaming symbol to name for dispatch, handling of language objects, pointer protection).
Changing calls like CHAR(type2str(x)) to type2char(x).
Faster type2xxx lookup. Added type2rstr to allow caching of ScalarStrings for typeof.
Fixes after rebasing type2xxx lookup fixes on top of default class pre-allocation.
Finished rebase.