request(), seek() or deliver_xxx() in order to start the data flow.
Autonomous generators must be genuinely autonomous (having their own
process), or otherwise arrange to be called.  TCP does this by
starting the retry timer immediately.

Add some debugging statements.

Add reference-counting to processes.

Add timer_running() test.

equivalents for alloc_pkb() and free_pkb(), which will be retired in
due course).

from the normal POSIX-style open()

ensure that we only drop our self-reference exactly once.

To maintain the guarantee that an object won't go out of scope
unexpectedly while one of its event handlers is being called, the
event-calling functions now automatically obtain and drop extra
references.

Add "xfer" to all xfer functions and "job" to all job functions.

in code defining reference-counted objects.

Dehyphenate "data-transfer".

output buffering defintions and the like)

Added basic El Torito ISO image boot capability

download

Make expand_buffer() a non-inline function, so that we can add debug
messages.

Expandable buffers now don't *always* round up to the next power of two.
This allows e.g. loading a 137MB ISO image on a machine with only 256MB
RAM...

around which still hold pointers to variables belonging to our parent...

correct prototypes for srandom(), rand() and srand().

is now gPXE-specific.  (The standard malloc() et al have been in stdlib.h
for a while).

Add free memory counter.

full-length PKB allocation.

protocols by URI scheme.