Release History:

v1.0: 24 Feb 2005
	Initial release.

v1.1: 1 Mar 2005
	Instead of ignoring track segments, we record them now,
	and by default don't interpolate between them. This can
	be disabled, ie, match between track segments.

v1.2: (Not released until 1.3)
	Added --machine/-o option. This outputs the tags from
	the passed files in a machine-readable CSV output.

v1.3: 25 April 2006
	It would appear that the Exiv2 API changed somewhat.
	And gpscorrelate didn't work. Reported to me by a friendly chap.
	Now fixed to work correctly with the latest Exiv2 v0.9.1.

v1.4: 28 May 2006
	Added option to preserve mtime on input photos. Patch submitted
	by Russell Steicke. (http://adelie.cx/).
	Also added patch to make GPX read correctly in non-C locales - 
	would interpret "." as thousands seperator in some locales.
