Regenerate documentation
Import functions from other shell libraries

Import from other shell software I am working on (closed source).
New functions: sf_get_fs_device, sf_func_is_defined, sf_txt_cleanup, sf_soft_version, sf_soft_available_version, sf_svc_is_enabled, sf_svc_is_up, sf_user_uid, sf_user_gid, sf_disk_normalize_device, sf_disk_fs_size, sf_disk_category, sf_disk_type, sf_krn_module_is_loaded, sf_lv_to_vg.
Switch version to 1.1.22