doc-src/Tutorial/Misc/Defs.thy

added METHOD_CASES, resolveq_cases_tac;
removed multi_resolveq;
improved 'tactic' method: bind thm(s) function;

Defs = Types +
consts nand, exor :: gate
defs nand_def "nand A B == ~(A & B)"
     exor_def "exor A B == A & ~B | ~A & B"
end