PARI CVS and gp2c CVS should get along now

[Bill Allombert <allomber@math.u-bordeaux.fr>]

Hello PARI developers,

I have commited a set of patch that should allows the CVS versions
of both PARI and gp2c to get along nicely.

The downside is that currently gp2c don't work with other version
than the CVS. Tht will be fixed eventually.

The installation instructions are as follow now:
1) Be sure to have pari installed via `make install'.
Note that you can install it in a private location with
./Configure --prefix=$HOME/pari/i686 
for example.
2) copy or link the file `pari.cfg' that should be in
$prefix/lib/pari/pari.cfg in the gp2c directory.
3) in the gp2c dir, run ./configure
4) run make and make check as usual.

At this point gp2c-run should work as usual.

There is at least a new gp2c feature: you can use `member functions'
without having to declare argument with a type tag.

Note that the gp2c tutorial has not been updated yet.

Please test!

Cheers,
Bill.