ext/socket/constants.c (level_arg): use unknown_level_to_int for
non internet protocol.
(optname_arg): use only so_optname_to_int for non internet protocol.
(cmsg_type_arg): use only scm_optname_to_int for non internet
protocol.
ext/socket/mkconstants.rb: generate unknown_level_to_int.
rename iplevel_to_int to ip_level_to_int.
ext/socket/constants.c (level_arg): use unknown_level_to_int for
non internet protocol.
(optname_arg): use only so_optname_to_int for non internet protocol.
(cmsg_type_arg): use only scm_optname_to_int for non internet
protocol.
ext/socket/mkconstants.rb: generate unknown_level_to_int.
rename iplevel_to_int to ip_level_to_int.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22186 b2dd03c8-39d4-4d8f-98ff-823fe69b080e