[PATCH] Locations are no longer required by lalr1.cc

[Akim Demaille]

        * data/lalr1.cc (_b4_args, b4_args): New.
        Adjust all uses of locations to make them optional.
        * tests/c++.at (AT_CHECK_VARIANTS): No longer use the locations.
        (AT_CHECK_NAMESPACE): Check the use of locations.
        * tests/calc.at (_AT_DATA_CALC_Y): Adjust to be usable with or
        without locations with lalr1.cc.
        Test these cases.
        * tests/output.at: Check lalr1.cc with and without location
        support.
        * tests/regression.at (_AT_DATA_EXPECT2_Y, _AT_DATA_DANCER_Y):
        Don't use locations.

0001-Locations-are-no-longer-required-by-lalr1.cc.patch
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