io.c: rdoc for File::open and 1.9 feature in file modes.
transcode.c: rdoc for String#encode
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20946 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
io.c: rdoc for File::open and 1.9 feature in file modes.
transcode.c: rdoc for String#encode
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20946 b2dd03c8-39d4-4d8f-98ff-823fe69b080e