* complex.c: described syntax of string form.
	* rational.c: ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39677 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-03-10

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39678 b2dd03c8-39d4-4d8f-98ff-823fe69b080e