merge revision(s) 34927:
* string.c (rb_str_aref): Improve rdoc, as per [bug #6106]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34928 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 34927:
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34928 b2dd03c8-39d4-4d8f-98ff-823fe69b080e