[PATCH, libgfortran] Remove AM_MAKEFLAGS.

[David Edelsohn]

>>>>> Steve Ellcey writes:

Steve> Woops, forgot to include that information.  I updated to 3.80 gnu make and
Steve> it didn't help any.  I still needed to set AM_MAKEFLAGS.

	I think it would help if you would do some more investigation and
find out where and why CC_FOR_TARGET is expanded when building native but
not expanded when building cross.

David