Linking Pike on UnixWare 7 used ld -G with gcc. Should use gcc -G

Imported from http://bugzilla.roxen.com/bugzilla/show_bug.cgi?id=1204

Reported by Boyd Lynn Gerber, ZENEZ gerberb@zenez.com

I have finally traced the problem of core dumps and random problems to linking pike with th ld -G. I edited configure.in and changed the ld -G to gcc -G and the program went from not passing most tests to passing all but two. One was my problem and is fixed by increasing the number of process a user can run as well as the total system wide process.