merge revision(s) 49788,49790: [Backport #10904]
* lib/time.rb (strptime): Support %s.%N. [ruby-core:68301] [Bug #10904] Patch by Sadayuki Furuhashi.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@51599 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 49788,49790: [Backport #10904]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@51599 b2dd03c8-39d4-4d8f-98ff-823fe69b080e