solves PR3376 by matthew.gream@pobox.com, fix slightly different
ok mcbride@ deraadt@

ok millert@

APIWARN; disabled by default.  In use by many developers for quite some time,
now they have a common knob to enable/disable this

millert ok

- extend_pgdir and malloc_make_chunks return int, not void*
ok tedu@

ok tedu@

ok tdeval@ henning@ millert@

checking for non-zero since an empty field is equivalent to 0.
Problem noted by Graeme Lee.

umask detection.

henning@ OK

reference it rather than /etc/netstart
ok henning@ millert@

millert@ ok

ok hin@ deraadt@ pb@

You must have an up-to-date gcc for this!
deraadt@ ok

ok millert@

ok deraadt@, millert@, jmc@, suggested by espie@

where applicable.

ok henning@ dhartmei@

ok millert@

Noted by Brian Poole

samba; this is consistent with useradd and adduser.  From Dan Brosemer.

Use "extern __inline" instead of "static __inline" since the extern
flavor behaves more like a macro (which is what we want).
OK deraadt@ and tested on all platforms by various folks.

now