_NAME_
sortTrackers

_PROTOTYPE_
int sortTrackers(const void *pVoid1, const void *pVoid2);

_SHORT-DESCRIPTION_
Reorder data structs in a file

_DESCRIPTION_
sortTrackers is called by qsort in a few routines to reorder data structs
in their files. This routine is used only for the reordering of
non-periodic data types (i.e., those with start and stop time stamps) in
their files when a struct needs to be written to an archive file
somewhere before the end of the file in order to preserve a
chronological ordering of the structs in the file.

_INPUT_
* pVoid1 is a void pointer to the first struct. 
* pVoid2 is a void pointer to the second struct.

_OUTPUT_
* An integer is returned signifying the chronological ordering (by
start time stamps) of the two structs being tested.