Update our sources appropriately.  OK deraadt@ jsg@

Add nonblock support for xdrrecs
ok millert blambert & otto; from NetBSD. libc bump to follow soon.

from NetBSD

use it in a vararg function call that needs the type info.
Pointed out by otto@.

out by mickey@, seconded by millert@.
ok deraadt@.

u_char -> unsigned char
u_short -> unsigned short
u_long -> unsigned long
u_int -> unsigned int
okay millert@

ok millert@

code that assign a u_int value to x_handy.  However, this means
that we need to be careful checking for overflow as we can no longer
subtract a value and check the result for < 0.  We reorder the
expression instead to avoid this problem (basic algebra).
deraadt@ OK

entire trees for testing anyway, I might as well do this intrusive touching
of include files now.  Added openBSD tags.