Fixed a bug in the compilation variant handling causing the conflict debug option to be always enabled
Fixed a bug causing compilation variants to be installed with the wrong name
add tutorial of compilation variants
do not exclude elektra* functions from being documented
remove unecessary includes

- add_headers already does that
add cmp benchmark for #38
Implemented a remount command for remounting a backend with a different filename
and restructured the mount command to share a common code base
Implemented the mount resolver option
The umount command now also accepts a mountpath as argument