branches: 1.4.4;
lint: in a parameter declaration using typedef, keep the qualifiers

While C23 6.7.7.4p6 doesn't explicitly mention this particular case of a
'const typedef', keeping the qualifiers fixes a warning in probably
legitimate code.

Seen in cvs, regex_internal.c, function 'bitset_contain'.

tests/lint: demonstrate wrong interpretation of const pointer parameter

Seen in external/gpl2/xcvs/dist/lib/regex_internal.c:697.

lint: add more details to message about discarding qualifiers

The name of the function (or, if not available, its type) is useful in
lines that contain more than one function call.

lint: use separate message when discarding a qualifier in call