Defining a PYFCGI_STATS_SZ = 15 * 60s = 900

- send buffer formated by stats functions to clients
- close client socket if needed
- allow bind to reuse an address if nobody listen on it

The worker indicate each new request using semaphore

Implementing a dummy stream response loop sending PyFCGI version

Creating new files to handle IPC stuffs : include/ipc.h src/ipc.c

Now logging a python traceback

7 seems better than 5.

The responder_loop handle better child creation & deletion. A conf struct
member indicates the number of seconds the pool have to be idle before deleting
a worker.
In a same way, the pool has to be busy for at least 1s before a new
process can be added (the -f flag indicate if the counter has to be reseted
when a new process is created, allowing spawn burst).
The spawn() function call sigaction 2 times for SIGINT & SIGTERM in order
to catch both.

Adds a global flag for worker indicating their status (add checks for
each semaphore change)
The pool handler will no longer have to decrease the semaphore value when
a child exit.

Add a -t --timeout and a -f --fast-spawn option for further commit

Add --verbose -v option to log on stderr

A '\0' need to be added to read string if read exactly the expected ammount of
bytes.

read buffer was dropped

The url_scheme is static to "http" for the moment...

Note : segfault on virtualenv tests...

When using the debug build of python, assserts raises en freeze pyfcgi telling
a decref is run on a thing with visit count == 0....

When suffix is used in logline format a "\n" is missing...

And better handling of entrypoint import failure...