Fix typo maintainance -> maintenance
Improve ocpasswd short description, re-run autogen
Add autogen search path to work when building out of the source tree
Fix path to common.sh when tests run from another directory
regenerate autogen'ed files when making a distribution.
Ignore non-ascii characters in configuration file.

This is a quick fix for http://lists.infradead.org/pipermail/openconnect-devel/2013-July/001126.html