Cannot initialize static local constant

[mlbrooks]

Similar to #182, except here, the user's declaration is lexically scoped as local.

int main() {
    static const char bar = -1;
    printf("done\n");
}

Expected (everywhere): Compiles successfully and runs with output done

Actual (gcc8, gcc10): Compiles successfully and segfaults on startup.

Actual (gcc6): as expected

[Michael Brooks <mlbrooks@…>]

In f1791a4:

Expanding earlier #182 fix to another case of the same issue. Fixes #224?

There is now a reusable helper function addDataSectonAttribute that applies the fix to an ObjectDecl? when we realize it needs it. Test const-init is expanded with case of #224.