_get_git_tag_on_package_branch: use :awk instead of :ruby
_get_package_name_from_tag: use :awk instead of :ruby
_get_version_from_old_PKGBUILD: use :awk instead of :ruby
_get_package_name: use :awk instead of :ruby
_get_next_tag_from_tag: use :awk instead of :ruby