Refactors all data shared across a CLONE_SIGHAND group into a single structure. This makes it easier to understand and easier to add new such fields, which we'll want for mask handling.
Issue: #2311
Refactors all data shared across a CLONE_SIGHAND group into a single structure. This makes it easier to understand and easier to add new such fields, which we'll want for mask handling.
Issue: #2311