automatically concatenate version numbers
add include directories for out-of-source builds
use relative paths and add missing tests in .gitignore
add rpm and deb package generation
initial work on #89 and #224
add libc6 dependency to debian package
Merge pull request #297 from carstene1ns/small-fixes

Small fixes/improvements
Merge pull request #298 from carstene1ns/cpackdebrpm

.deb and .rpm package generation