Scott, in the long run it looks like you can merge the _ERRNO case with the case below it when doing error reporting and remove the SYSTEM ERROR or Problems part of the suffix, since memcached_last_error_message() will add all that stuff for you.
Russ Allbery February 6, 2012 at 7:01 PM
Here's the patch that we'll use in Debian for compatibility with 1.0.
Fixed
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Red Hat 6 seems to have a libmemcached package now, so the RPM should build that by default.
Debian seems to have a newer lib version with different error handling APIs.