Hello,

Based on suggestions from other people I have made the following changes
to the error handling wrappers:

  - moved the decls from <err.h> to <util.h>
  - don't print the strings
  - provide a function to control printing of errors.

The diff is on ftp://ftp.netbsd.org/pub/NetBSD/misc/christos/efun/
Please let me know what you think.

christos