Without doing SES_Charge, the worker will panic at the end of
CNT_Session() when a request is aborted before it is complete.

Found by: Federico G. Schwindt <fgsch@lodoss.net>

Rename http_FilterHeader() to http_FilterReq()
Add http_FilterResp()
make http_FilterFields() static
remove http_CopyResp()

Eliminate the HTTPH_A_DELIVER filter which only took out "Date:"
because we always overwrite Date: anyway.

The attached patch is a one-liner for waiter/cache_waiter_ports.c,
the code was referencing sp->t_open where it should have been
sp->t_idle, which was causing assertion failures on idle session
timeouts.

POSIX threads don't have a thread identifier that can be printed
in a portable manner.

I work with NetBeans, and it insists on this being present.

if sub is null (because it's the contents of a non-existing header),
pretend it's "" instead.

have decided what the strategy is going to be for synthetic in
the future.

Fixes	#545

Fixes: #1076

to 512 bytes on epoll systems.

(incl memitem) down to 512 bytes, despite ridiculously large
sockaddr_storage structs.

us 8 bytes per allocation.

impossible to deal with correctly.

Pointed out by:		Dong Feng

Fix sess mempool names

stats counters as worker-local unless they actually are.

need it during vcl_hash{}