* time.c (rb_strftime_alloc): raise ERANGE if width is too large.
	  Patch by Nobuyoshi Nakada. [Bug #4457] [ruby-dev:43285]

	* test/ruby/test_time.rb (class TestTime): add a test for the
	  above change.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@32886 b2dd03c8-39d4-4d8f-98ff-823fe69b080e