configure.in: Define IEEE_COMPLEX_DIVIDE.

configure.in: Define IEEE_COMPLEX_DIVIDE.

	* libF77/configure.in: Define IEEE_COMPLEX_DIVIDE.
	* libF77/[cz]_div.c: Arrange for compilation under
	-DIEEE_COMPLEX_DIVIDE to make these routines
	avoid calling sig_die when the denominator vanishes.
	* libF77/s_rnge.c: Add casts for the case of
	sizeof(ftnint) == sizeof(int) < sizeof(long).
	* libI77/endfile.c: Set state to writing (b->uwrt = 1) when an
	endfile statement requires copying the file
	Also, supply a missing (long) cast in the sprintf call.
	* libI77/sfe.c: Add #ifdef ALWAYS_FLUSH logic, for formatted I/O.

From-SVN: r32496