auth/login: find authdom instead of using hardcoded cs.bell-labs.com (thanks erik)
hget: revert hget -v change, this needs more thought

problems that need to be addressed:

- reads in the whole /proc every second for no reason
- breaks when http server doesnt include Content-Length header
- length is wrong for continued download (-o option)
games/snes: fix dspclock signed overflow (music stoping for minute)
pc64: prevent dat.h from getting overwritten by ../pc/dat.h

the rule that was used to copy header files from ../pc
accidently overwrote dat.h when ../pc/dat.h was updated
because it matched on all *.h files that was also found
in ../pc directory. change to exact match on $PCHEADERS
to prevent this.
libauthsrv: recognize amd64 $cputype in readnvram() to look for default locations
audio/oggdec: wait for pcmconv child process to exit

we have to wait for the pcmconv process to exit before
exiting yourselfs because otherwise pcmconv could
keep /dev/audio open and prevent further reopens for
a short period of time.
ramfs: fix srvname; postmountsrv() already prepends /srv/
6c, 8c: optimize away CMPL/CMPQ reg, $0 instruction in peephole pass

when the previous instruction sets the zero flag,
we can remove the CMPL/CMPQ instruction.
this removes compares for zero/non zero tests only.
it only looks at the previous non-nop instruction
to see if it sets our compare value register.