Fix the --enable-debug compiler warning options for older versions of gcc.

         fi

       else dnl $ICC = yes

         dnl this is a set of options we believe *ALL* gcc versions support:

         WARN="-W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wpointer-arith -Wnested-externs -Winline -Wmissing-declarations -Wmissing-prototypes -Wsign-compare"

         WARN="-W -Wall -Wwrite-strings -pedantic -Wpointer-arith -Wnested-externs -Winline -Wmissing-prototypes"

         dnl -Wcast-align is a bit too annoying on all gcc versions ;-)

         if test "$gccnum" -ge "207"; then

           dnl gcc 2.7 or later (well, they don't work on 2.2.2)

           WARN="$WARN -Wno-long-long -Wmissing-declarations -Wsign-compare"

         fi

         if test "$gccnum" -gt "295"; then

           dnl only if the compiler is newer than 2.95 since we got lots of

           dnl "`_POSIX_C_SOURCE' is not defined" in system headers with