_NAME_
get_days_structs

_PROTOTYPE_
structs = get_days_structs(day1996, structName)

_SHORT-DESCRIPTION_
A get a day's worth of data structs

_DESCRIPTION_
A get a day's worth of structs, starting with the data struct which
is valid at second zero of the day (which is usually archived in the
file of the previous day), and ending just prior to the data struct
which is valid at second zero of the next day (which is usually the
last struct in this day's archive file.)
_
get_days_structs reads the non-zero structs from the file, terminates
the array of structs with a zeroed struct, and returns the struct
array.

_INPUT_
* day1996 is the "day 1996" where day1996 = 1 on 1/1/96.
* structName is the full name of the structure for the data type we are
requesting (e.g., "L1CrisLowPriorityRate").

_OUTPUT_
* The day's array of data structs of type structName.  See description
above for the exact meaning of "a day's array of data."