[lib] add "checker" keyword as an alias to "patch_checker"
[lib] add "checker" keyword as an alias to "patch_checker"

grzn/multipath-tools-explained,gebi/multipath-tools,unakatsuo/multipath-tools,vijaychauhan/multipath-tools,grzn/multipath-tools-explained,vijaychauhan/multipath-tools,unakatsuo/multipath-tools,unakatsuo/multipath-tools