There should only be two changes in behavior:
arogue7/fight.c, arogue7/fight.c: a to-hit bonus is now correctly
applied to characters who are not monks instead of monks who are not
empty-handed.
urogue/fight.c: fixed an interaction with the "debug" macro that could
cause the wrong message to be displayed.
Converting all function definitions to ANSI style accounts for most of
the change. This has exposed other problems, such as daemons not
actually being their stated type, that will require more careful
solutions.
rogue4 and rogue5 set the player's ISRUN flag upon exit from sleep or
holding. This is apparently supposed to indicate that the player can
move again. What it actually does is make it harder for monsters to
hit the player, until the flag is reset.
As this behavior makes little sense and seems like a cheat, it has
been deemed a bug and removed.