semi-colon in LD_LIBRARY_PATH

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

Hello PARI/GP developers,

I have fixed some portability tweak with the GMP kernel.

One strange problem on OSF/1:
make bench look like

bench: gp-sta gp-dyn
        @env "LD_LIBRARY_PATH=.;$$LD_LIBRARY_PATH" $(SHELL) ../src/test/dotest $(SIZEOF_LONG)

OSF/1 loader does not allow the semi-comma and require a colon.
this break make bench as soon as LD_LIBRARY_PATH is needed...

Is there a reason to use ';' in the first place ?
As far as I know, the default on GNU/Linux and Solaris is a colon.

Cheers,
Bill.