Log Message:
Update to version 1.40.

V1.30 (March 2002) to V1.40 (June 2003)
-   simultaneous assignments
		(x1,x2,...,xn) := (a1,a2,...,an)

-   new functions
        divide, bit_count,
        set_workdir, get_workdir, gmtime,
        stack2string, stack_arraypush, string_scan,
        realloc, binsearch

-   some bug fixes (regarding qs_factorize and
	    handling of special variable and value arguments
        in user defined functions)