Merge pull request #84 from mkoppanen/master

A bit of general maintenance, mainly related to issue #69
Merge pull request #85 from mkoppanen/master

Revert PR 84 for now, finding cleaner solution that supports also older libmemcached
Fixed broken tests, fixed build against different libmemcached versions (hopefully) and misc error fixes
Merge pull request #86 from mkoppanen/master

Fixed broken tests, fixed build against different libmemcached versions ...
Push to start travis ci
Merge pull request #87 from mkoppanen/master

Push to start travis ci
I guess holidays 2013 makes more sense, also added travis build status
Merge commit '9812556e7a3e4900a5d10a898b5593c171d59064'
Merge commit '898735a88c92cc0db9c00caf432d6dfa16b27563'
Merge commit '51a3ec8bbb44812c41fe6cf15d46c20f0209f278'