- fixed download URLs of tarball and signature file in specfile

- Update to version 1.1.1
* Update README for gitlab migration
* Update configure.ac bug URL for gitlab migration
* Fix spelling/wording issues
* gitlab CI: add a basic build test
* Adopt X.Org standard coding style (via x-indent-all.sh)
* Add .git-blame-ignore-revs to hide whitespace commits from git blame
* Variable scope reductions as recommended by cppcheck
* Delete functions identified as unused by cppcheck
* Make some functions static that aren't called from other files
* Remove redundant assignment
* Remove redundant null-pointer check
* Fix -Wsign-compare warnings
* Remove unnecessary cast of strlen result in malloc argument
* Remove weak symbol setup from Atom code
* Depend on xproto and fsproto that are now used.