Commit [r1486] Maximize Restore History

Improved and extended Values

Forth 2012 Traverse-Wordlist

improved documentation

core: added d0= and 0= as assembly primitives
and use them in other compare operations.
Saves a lot of code space.

Wordlist entries are now 8bit clean. Words with
umlauts or e.g. Greek commands work as expected,
unless the terminal does not cooperate. Thanks to Enoch.

A few internal improvments.

mtrute 2013-12-23