Fix some memory leaks if SDDM is closed when a session is running
Merge pull request #162 from davidedmundson/memory_leaks

Fix some memory leaks if SDDM is closed when a session is running
Add version information

This variable will be useful when we need to reference sddm version.
Remove -march=native to fix ARM builds

This flag breaks ARM builds and doesn't buy us much when building
on other architectures.
Add man pages

Man pages are generated from reStructedText using rst2man.