This directory contains tcl code which implements various aolserver
APIs.  It is run by a master interpreter which actually sets up a
slave interpreter which runs the aolserver code.  That's done so
that we can implement stuff here which is implemented in the C code
of the actual aolserver, without allowing aolserver tcl code per se
to mess with it; also to allow us to emulate some aolserver
modifications to the tcl interpreter itself (particularly regarding
I/O streams).

However, to do that, we use a few moderately dangerous commands which
are not available to aolserver tcl generally; also, the C code relies
on code here to do some housekeeping which can crash the server if
done wrong.  So, don't be too quick to mess with this stuff unless
you are comfortable running the server under a C debugger if need be.