clobbered by longjmp / vfork instead of the gcc "(void)&foo;" hack.

fail anyway so check for that.  Also convert "." to "" since that
way we avoid the lstat() (which we don't need) and the subsequent
chdir() and some dir checks.

ok millert@ fgsch@

add more to all)

o ttyCcfg is 600 not 666
o add radio
o joy is 666 not 600 (current i386 MAKEDEV does this)

s/tzs/czs/ typo

'the big disk case' no longer sets vars and calls dodisk, would take more space
to additionally do the 'stepping' argument (see cd\* in generated MAKEDEV)

prepare dodisk* script functions for a 7th argument, what I call disk stepping,
the number to add from rd0a to rd1a minor numbers, defaulted to 16; some archs
*cough*macppc*cough* still have 8 for cdroms and such

s/tty/tth/

versioning to be imported properly