* strftime.c (rb_strftime_with_timespec): fix padding of time zone
	  offset.  [ruby-dev:43287][Bug #4458]

	* strftime.c (rb_strftime_with_timespec): add an interim digit for
	  the timezone offset which is less than an hour.

	* strftime.c (rb_strftime_with_timespec): fix carry-up bug and
	  overwrite '+' with '-' if negative offset less than a hour.
	  [ruby-core:44447][Bug #6323]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@35416 b2dd03c8-39d4-4d8f-98ff-823fe69b080e