eliminate unused variables

Signed-off-by: Steven Noonan <steven@uplinklabs.net>
cmd.c: fix incorrect declaration of list_vanquished()

Signed-off-by: Steven Noonan <steven@uplinklabs.net>
fix operator precedence for metallivore iron bar eating

Signed-off-by: Steven Noonan <steven@uplinklabs.net>
only define encode_xlogflags if XLOGFILE is defined

Signed-off-by: Steven Noonan <steven@uplinklabs.net>
Makefiles: harden warnings a bit

Signed-off-by: Steven Noonan <steven@uplinklabs.net>
restore class-based genocide

Signed-off-by: Steven Noonan <steven@uplinklabs.net>