merge revision(s) 41906: [Backport #8620]

	* man/ri.1: Incorrect use of .Dd macro [Bug #8620] by Tristan Hill


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@41957 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 41915:

	* sprintf.c: Fix typo patch by @hynkle [Fixes GH-357]
	  https://github.com/ruby/ruby/pull/357


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@41958 b2dd03c8-39d4-4d8f-98ff-823fe69b080e