[cvsnt] Recent timezone change

[Tony Hoyle]

Michael Wojcik wrote:
> I think (following a quick glance at my somewhat-out-of-date CVS
> sources) that CVSNT just uses localtime and friends to convert between
> local and universal time.  Those are implemented in the MSVC7 runtime.

We mostly use the OS routines except those for stat()/fstat() etc. which 
are broken on all versions of the MSVC runtime (known bug that MS have 
said they're not going to fix).  For those we either read the UTC value 
directly off the file (for NTFS and friends) or go through a smarter 
conversion (for FAT) (see http://www.codeproject.com/datetime/dstbugs.asp).

Tony