This macro returns whether or not the passed file number is a
	scheduled save (SCHSAV) file number.  Scheduled saves are global
	saves scheduled at certain times of the day.

	file_number	save/restore file number to test

	This macro returns values as follows:

	TRUE			this is a SCHSAV file number
	FALSE			this is not a SCHSAV file number

	This macro is found in: macro_h

	Related macros: