Fix problems with using f2c.e/f77.sh on plain Fortran files

[olebole]

This reverts 2dee32c

While the patch successfully fixes the problem with equivalencies, it brings other problems; namely that standard FORTRAN I/O doesn't work anymore, as reported in #369.

$ cat simple.f
      PROGRAM simple
      OPEN (1, FILE='test.x')
      CLOSE (1)
      END
$ ${host}bin/f2c.e simple.f
Error on line 3 of simple.f: p1_const:  bad constant type '1'
Error on line 3 of simple.f: p1_const:  bad constant type '1'
Error on line 3 of simple.f: p1_const:  bad constant type '1'
Error on line 3 of simple.f: p1_const:  bad constant type '1'
Error on line 4 of simple.f: p1_const:  bad constant type '1'

Equivalencies are not used in IRAF, while standard FORTRAN I/O is used by people interacting with IRAF.

The f2c maintainer (David M. Gay) was contacted to find a proper solution for the original problem described in iraf-v216/iraf#107, and he provided an updated version 20240130, which is included in this PR. The other major change in this version is that there is a command line flag "-cw" to reduce the info output of f2c. This removed another patch in IRAF which did the same unconditionally.

Also included is a small fix that made the output of a failing f2c disappear when the "-w" flag was used, and a fix that removes duplicate linking of f2c on host programs.