New wcall implementation.
Lots of work on object system.
Changed wtable.lookup_or_add to use wcalls
Fixed wtable on_missing argument types.
Made wcall interface work.
Added wstr_copy.
Fixed wtable on_missing call.
Work on parser using hashtable for tokens.
Started changing parser to use wstr_trie.
More work on wstr_trie
Added wstr_empty
Added wtoken_new
Added more wobj casting macros.
More work on parser
Replaced wstatus with werror *
Removed wsym
Removed wchannel, wplace