Flags system

[mmmm1998]

I have been prepared a pull request, which need a flag for this, but it looks like all possible slots busy. @Orc, that do you think about it, how new flags could be added now?

[Orc]

There are a couple of open flag slots in the v3 branch -- I am still working on a way to expand the flags array given the limitations of C (there times when Pascal packed arrays would be really useful) that is efficient, fairly space-thrifty, and not so horrifically kludgy that it would make my brain snap when trying to debug it.

[Orc]

Okay, v3 how has a *new* and *improved* flags arrangement, not documented (but look at the various sample programs for how to interact with the flags) and has broken the entire user interface.

I may go back in and build a compatibility layer so that old binaries will continue to work (via appending _v3 to all of the changed interfaces, a shim module that has the old interfaces and remaps them to the new, then a whole wad of #defines that alias the _v3 names back to the older names for the illusion of compatibility.)

[mmmm1998]

Intresting, thanks for notification.

[Orc]

I'm finally updating the documentation, and will close this issue when it's done.