* ext/socket/option.c: rename functions introduced in r41009
  s/ip/ipv4/g because they are ipv4 functions.
  (there's a policy that the name "ip" is for methods which supports
   both ipv4 and ipv6)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41034 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* enc/trans/japanese_euc.trans, test/ruby/test_transcode.rb,
  tool/transcode-tblgen.rb: change EUC-JP-2004 to EUC-JIS-2004.
  This is follow up to changes in r41024.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41035 b2dd03c8-39d4-4d8f-98ff-823fe69b080e