assume energympro and globalsatsport use LocalTime. (#447)

assume energympro and globalsatsport use LocalTime. (#447)

* assume energympro and globalsatsport use LocalTime.

add an option to set the timezone for these formats, as the
timezone used to create the data may not match the timezone of the
computer reading the data.

* modify energympro/globalsatsport tests to use

UTC offsets.  Europe/Stockholm wasn't available on our Docker
bionic test image.

* util.cc build fix

include QTimeZone, dropped in manual merge

* Fix build error in util.cc

Lazy conflict merging.

* modify serialization ref files for new option.

* make new var static in energympro.

Co-authored-by: GPSBabel <gpsbabel@users.noreply.github.com>