FC recommendation in README.MacOS

[Rik]

11/27/14

Has anyone followed the instructions for building Octave in the
README.MacOS and does the line defining the Fortran compiler FC make any
difference?

##### Cut #####
2.2.2 Building Octave as a 32-bit Application
--------------------------------------------

The commands below are sufficient to build a 32-bit Octave.

  export FC="/usr/bin/gfortran"
  export CFLAGS="-m32"
  export FFLAGS="$CFLAGS -ff2c"
  export CPPFLAGS="$CFLAGS -D_REENTRANT -D__LISTS__"
  export LDFLAGS="$CFLAGS"
  ./configure --disable-readline --disable-docs
  make
##### End Cut #####

On the Linux side, the Fortran compiler used is set by the F77 environment
variable, not the FC variable.  I rather suspect that it is the same on a
Mac and that the line should be "export F77=...".  Again on Linux, if FC is
used for the compiler then the flags variable is FCFLAGS, not FFLAGS.  So
there is a second mismatch.

I'm working at removing cruft and this is one of the few places in the
Octave sources that mentions the FC variable.

Thanks,
Rik