Demote #monpolycontrol and #wizdebug_traveldisplay from commands to
simple boolean options. The former has the same name, the latter
is called travel_debug. Rename #wizdebug_bury to #wizbury; it
shouldn't matter that it goes away when compiled without DEBUG.
There are now five wizard-mode boolean options: monpolycontrol,
sanity_check, and wizweight are documented in the Guidebook;
menu_tab_sep and travel_debug are commented out there.
Guidebook.mn has been tested; Guidebook.tex has not.
e0b7d2f5a9