Portable mknod ?? does it exist?

[Guy Harris]

 >dec: decnod
 >myfifo created
 >ERRNO: 6
 >Open Failed: No such device or address
 >dec: ls -l myfifo
 >crw-r--r--  1 drs      255, 255 Aug  1 16:54 myfifo

That ain't no FIFO, that's a character special file.  The "mknod" call
in the original posting looked OK, so either there's something funny in
that code or there's a bug in Ultrix that causes it to create character
special files when you ask it to create FIFOs....