* lib/yaml/baseemitter.rb (indent_text): was forcing a mod value
  of zero at times, which kept some blocks from getting indentation.

* lib/yaml/baseemitter.rb (node_text): rewriting folded scalars.

* ext/syck/syck.h: reports style of scalars now, be they plain, block
  single-, or double-quoted.

* ext/syck/syck.c: ditto.

* ext/syck/gram.c: ditto.

* ext/syck/node.c: ditto.

* ext/syck/token.c: ditto.

* ext/syck/rubyext.c (yaml_org_handler): symbols loaded only
  if scalar style is plain.

* ext/syck/rubyext.c (yaml_org_handler): some empty strings were
  loaded as symbols.

* test/yaml/test_yaml.rb (test_perl_regexp): updated test to
  match new regexp serialization.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@6334 b2dd03c8-39d4-4d8f-98ff-823fe69b080e