-current branch. I mistakenly checked out the 2.2.x rpc.ypxfrd into my
-current working directory. No harm done, but I got really confused
when I went to check out rpc.ypxfrd again and found the changes I
wanted to make were already there. (I'm going to fix the other 2.2.x
versions of the other programs in a minute.)
Anyway: protect errno in the signal handler, in the -current version
of rpc.ypxfrd this time.
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.