lex.c.blt, keywords, load.c, thread.c: more ANSI'ize.
a patch from Tadashi Saito <shiba AT mail2.accsnet.ne.jp>
in [ruby-dev:32725]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14655 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* load.c (search_required): returns path too if feature is being
loaded. [ruby-dev:32048] [TODO: refactoring]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14586 b2dd03c8-39d4-4d8f-98ff-823fe69b080e