Bug 1101

Fortran and C apps have problems when going from f2c to g2c
libs. The file unix.c in Spice no longer compiles for
example.

a fortran app using xargc and xargv will no longer work.

g77 docs that explain the differences and using '-lg2c -lm'
instead of
using '-lf2c' and the types of changes are explained here:

<ftp://alpha.gnu.org/g77.plan>

linking with f__xargc should work according to the docs,
however I'm still testing this and I'm having trouble
compiling and getting it to work, note after my changes:

[root@kenny Spice2g6]# cd src/
[root@kenny src]# ls
Makefile        README          spice.f
spice.o         unix.c
Makefile.make   libspice        spice.f.sec     unix-mm.c
unix.c.make
Makefile.win32  mm.h            spice.h
unix-mm.o       unix.o
[root@kenny src]# make
cd libspice ; make
make[1]: Entering directory
`/usr/src/redhat/BUILD/Spice2g6/src/libspice'
make[1]: `libspice.a' is up to date.
make[1]: Leaving directory
`/usr/src/redhat/BUILD/Spice2g6/src/libspice'
gcc -g -O2 spice.o unix.o unix-mm.o libspice/libspice.a -g
-O2 -lg2c -lm
-lc -o spice
unix.o: In function `iopraw_':
/usr/src/redhat/BUILD/Spice2g6/src/unix.c:130: undefined
reference to
`f__argc'
/usr/src/redhat/BUILD/Spice2g6/src/unix.c:131: undefined
reference to
`f__argv'
/usr/src/redhat/BUILD/Spice2g6/src/unix.c:142: undefined
reference to
`f__argc'
collect2: ld returned 1 exit status
make: *** [spice] Error 1