PATCH: Sync time/mktime.c with gnulib

[Roland McGrath]

> 2012-03-15  H.J. Lu  <hongjiu.lu@intel.com>
> 
> 	* time/mktime.c: Sync with gnulib mktime.c at commit
> 	a7967a2cf0998b6c157c7cf8e1d8d9d11dab30b0.

IMHO this needs to go in as several separate changes with individual
review.  It looks like a lot of the diff is just trivial indentation fixes,
which can go in without particular review, making the substantial diffs
far easier to read.


Thanks,
Roland