Fix URLs in README
Print warning if rst2html is not found
Fixed typos from r55
Fix email adresses at AUTHORS
Pathes from examples and packages are now adjustable too [ 1778516 ]
Pathes are now adjustable with 'configure' [ 1777670 ]
Reworked documentation [ 1716443 ]
Fix name of manpages in automake so se.1m gets distributed, #1777670
Add USERS.MANUAL.html, so rst2html is optional, #1777670