IWYU doturncmd.c
Pull a bunch of definitions into globals.h replace other instances with declarations in headers instead of .c files
Remove unused file enroll_valid.c
IWYU enslave.c
IWYU examine.c
Pull Psymbol and Planet_types into globals.h and maps.h.  constify them
IWYU explore.c
Remove stray copy of file.h
IWYU files.c
IWYU files_rw.c
Remove unneeded datafile descriptors
IWYU files_shl.c
Fix header for fire.c
IWYU fuel.c
IWYU get4args.c
IWYU getplace
Remove guardian program.  Standard Linux distros come with better tools than this (and it's a bug if the server crashes)
Add TinyMUD copyright license
Remove interface.h, moving needed pieces into GB_server.c.  Make some fields in GB_server.c static
IWYU land.c