tuning around String#gsub.
* lib/yaml/tag.rb: Replace nodoc with stopdoc so Module methods get
documented.
* lib/yaml/store.rb (YAML::load): modified to support empty
database.
* lib/yaml/store.rb (YAML::Store::marshal_dump_supports_canonical_option?):
add a method to support faster PStore.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@16083 b2dd03c8-39d4-4d8f-98ff-823fe69b080e