* src/gram.h, src/gram.c (pure_parser, glr_parser): Move to...

* src/getargs.c, src/getargs.h: here, as bool, not int.
(nondeterministic_parser): New.
* src/parse-gram.y, src/scan-gram.l: Support
%nondeterministic-parser.
* src/output.c (prepare): Use nondeterministic_parser instead
of glr_parser where appropriate.
* src/tables.c (conflict_row, action_row, save_row)
(token_actions, token_actions, pack_vector): Ditto.