Added "-Werror=implicit-function-declaration" to CFLAGS in the

configure script, now that Alessandro De Laurenzis has cleaned
up the code so that it will compile with the setting (now, just
need to do the same thing for "implicit-int"!).

scripts/configure

@@ -7780,7 +7780,7 @@ case $target in
 
         case $target in
 	*x86_64*)
-	    CFLAGS="${CFLAGS} -m64 -fPIC"
+	    CFLAGS="${CFLAGS} -m64 -fPIC -Werror=implicit-function-declaration"
 	    ;;
     esac
     if test $usingOGL ; then

scripts/configure.in

@@ -1359,7 +1359,7 @@ case $target in
     dnl 64-bit support for AMD Opteron
     case $target in
 	*x86_64*)
-	    CFLAGS="${CFLAGS} -m64 -fPIC"
+	    CFLAGS="${CFLAGS} -m64 -fPIC -Werror=implicit-function-declaration"
 	    ;;
     esac
     if test $usingOGL ; then