_NAME_
getStruct

_PROTOTYPE_
void *getStruct(uint32 secondsSince1996, char *structName);

_SHORT-DESCRIPTION_
Get a data struct valid at a particular second-since-1996

_DESCRIPTION_
getStruct retrieves any data structure of type structName from the
archives which was valid at time secondsSince1996. Beware that
despite the singular nature of the name, a pointer to an array of
structs of type structName is always returned. This array is always
terminated by a zeroed struct of type structName. The reason for this
is that, due to some anomoly with the clock perhaps, more than 1 data
struct may be stamped as valid during a particular interval, so there is
a small chance of getting more than a single "valid" data struct back.
There is a much better chance of the array only containing the
terminal zeroed struct. In such a case, either no data exists during the
interval or it has not yet been archived. 
-
getStruct is really just a special case of getStructs, where both
secondsSince1996Start and secondsSince1996Stop are set to the
same value, secondsSince1996. 
-
Memory has been allocated inside the call to getStruct for the array of
structures returned, and this memory needs to be freed by the caller.

_INPUT_
* secondsSince1996 is the second-since-1996 we are looking for valid data.
* structName is the full name of the structure for the data type we are
requesting (e.g., "L1CrisLowPriorityRate").

_OUTPUT_
* A pointer (void *) to an array of structures of type
structName. The calling routine must cast the pointer to type
structName.