partially merge revision(s) r44082: [Backport #9228]

	* ext/.document:  Add syslog/lib to documentable items. [Bug #9228]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@45052 b2dd03c8-39d4-4d8f-98ff-823fe69b080e