snprintf() format string should be literal
avoid compiler silly warnings

sure deraadt@

Remove several casts to (char *) 0 and replace them by NULL

Prompted and OK by tb@

This diff is rather large, but it's just simply removing unnecessary headers
, remove some lint-style comments, add missing void to functions without args,
also some function prototypes (extern) were missing their args, so I added them
as they were defined in hack.h

OK tb@ on separate diffs

Use __progname instead of hand-rolled parsing of argv[0].
Inspired by similar diffs by tobias@ and millert@.

"I like the concept" pjanzen@
ok tedu@

Cast ctype functions' arguments to unsigned char.

ok guenther@

Match bwrite()'s prototype with write()'s, zapping a lint comment
Delete casts to char* of arguments to bwrite() and free()

fix potential bugs spotted by parfait
ok millert@ pjanzen@

rcsid[] and sccsid[] and copyright[] are essentially unmaintained (and
unmaintainable). these days, people use source. these id's do not provide
any benefit, and do hurt the small install media
(the 33,000 line diff is essentially mechanical)
ok with the idea millert, ok dms

convert a bunch of strn{cpy,cat}->strl{cpy,cat}
pjanzen@ ok

De-register, ANSIfy, clean up.

Major strings rework. Ok pjanzen@

2451 lines of strdup/sprintf/strcpy whacking. mostly ok'd by pjanzen
already, but he may have later changes to make still.

hack is free

Thanks to Andries Brouwer, Jay Fenlason and the folks at CWI for their
efforts.

http://www.cwi.nl/~aeb/games/hack/hack.html

ok deraadt@

Nothing but comments after #endif and #else; heko@iki.fi

$OpenBSD$

r?index -> strr?chr

branches: 1.1.1;
Initial revision