src/test/isolation/specscanner.l is a few bricks shy of a load

Somebody needs to brush up their flex-fu:

make[1]: Entering directory `/home/postgres/pgsql/src/test/isolation'
/usr/local/bin/bison  -o specparse.c specparse.y
/usr/local/bin/flex  -o'specscanner.c' specscanner.l
specscanner.l:85: warning, -s option given but default rule can be matched
make[1]: Leaving directory `/home/postgres/pgsql/src/test/isolation'
        regards, tom lane