Turns off annoying “unused” warnings for parser.c
Turns off annoying “unused” warnings for parser.c

Almost all of the “unused” warnings are for parameters that sid passes along but aren’t used in all rules/actions.  It’s not always possible to add a “(void)var;” to suppress the warning, so we turn off these largely unimportant warnings for the sid-generated parser.c

katef/jvst,katef/jvst,sfstewman/jvst,sfstewman/jvst