The manpages are generated from pod files using pod2man, but it has been
a long time since we last re-generated them, and the new versions of
pod2man generate significantly different (and simpler) pages.
So this patch just regenerates the man pages, to make future changes
easier and more self contained to review.
This patch adds man pages for chasquid's main commands and
configuration. They are generated using pod2man (commonly used for this,
and included with perl in most distributions).
The generated man pages are included to avoid introducing a dependency
for such simple task, similar to how we handle protocol buffer generated
files.
