CVS log for: Makefile.am

 - included Pth has experimental support for sys_epoll
 - removed response concurrency code -- useless

TCP_CORK used by default if available; can be disabled by autoconf.

 - Allow number of concurrently responding threads to be limited
 - Add support for sendfile() as a response mechanism (should still
   wrap this in non-blocking I/O... i.e., write our own pth_sendfile()

- fixed critical bug that caused only the first part (probably about 256K)
  of a file to actually be returned to the user
- CoW was using a pool of pmsg structures for communication between the
  main thread and the depot, but was malloc'ing messages sent from the
  depot to the handlers; messages are now forwarded to handlers instead of
  copied so we avoid the malloc overhead
- CoW now re-uses server socket so we don't have to wait a couple minutes
  after shutdown before restarting (avoids "Address in use" messages)

Actual 0.4.0 release
 - incorporate automake build system
 - better config file support
 - a stripped down, patched Pth is included
 - CoW looks for config file in /etc/cow.conf and /usr/local/etc/cow.conf
   now also