Do much more in the defpackage form

Rather than creating a small defpackage form and then turning the package into a conduit, generate a huge one which is already a conduit (up to the recomputation). This makes fasls much larger, but means you don't get warnings for compile/load cycles. Disk space is cheap now.

Some other small changes

It's worth noting that before this release the system was not strictly conforming CL, at least it was not if you compiled and then loaded code, which was kind of the whole point.