merge revision(s) 44696: [Backport #9429]

	* lib/racc/rdoc/grammar.en.rdoc: [DOC] Correct grammar and typos
	  Patch by Giorgos Tsiftsis [Bug #9429] [ci skip]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@45117 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 44549: [Backport #9387]

	* range.c (Range#size): [DOC] improve description and add examples.
	  Patch by @skade. [Fixes GH-501]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@45118 b2dd03c8-39d4-4d8f-98ff-823fe69b080e