Add bitwise AND, OR, and NOT operators for macaddr data type.

doc/src/sgml/func.sgml

src/backend/utils/adt/mac.c

src/include/catalog/catversion.h

src/include/catalog/pg_operator.h

src/include/catalog/pg_proc.h

src/include/utils/builtins.h

src/test/regress/expected/macaddr.out

src/test/regress/sql/macaddr.sql