changes since last release on 11/25/91

	doc/sqldb_sqlref.doc deleted
	doc/sqldb_sqlrefman.doc updated
	added ORDER BY clause to SELECT
	more memory leaks fixed
	bug in NOT, MAYBE, MAYBE_I, MAYBE_A logical operators fixed
	bug in SELECT ... OUTPUT TO filename fixed
	bug in column formatting in GROUP BY fixed
	added DATE and TIME datatype
	bug in row selection in GROUP BY fixed
	bug in row deletion/insertion fixed
	added support for NOTNULL in INSERT INTO, UPDATE and 
		DISPLAY TABLE statements
	bug in ARexx interface fixed