Merge pull request #19 from john30/master

-lrt needed
Merge pull request #20 from john30/master

added scanning, bugfixes
set 'silent build' as default; suppression of gcc warnings in main executable from local libraries added.
configure.ac missing checks added.
configure.ac cosmetics.
missing flush added.
Merge pull request #21 from john30/master

some fixes, better support for CSV, nicer logging
Merge branch 'master' of git://github.com/yuhu-/ebusd