remove old content from changelog
Fix missing clearing of oc->busyobj on HSH_Fail.

The oc's busyobj isn't cleared in HSH_Fail (like it is in HSH_Complete).
This allows a thread to get a pointer to an already free'd busyobj.

Fixes: #1467
sess_workspace -> workspace_client
Short note about vcc_allow_inline_c
Correct vmod name

Spotted by Martin Boer on #varnish
Missing set on req.backend_hint = ..

From Martin Boer on #varnish
Make sure the thread_pool_stack default is at least the minimum
imposed by the kernel.

Spotted by:	ingvar (on PPC64)
Fix bad example.

Spotted by: Martin Boer
create a hard dependency on some curses library
Re-add some XXX Makefile comments
Only grab the first matched fragment in varnishncsa

Fixes: #1462
Rearm at zero TTL on failed objects

Fixes: #1468
Take offset rounding into account when rounding the length of segment
size.

Fixes: #1469
Expand access to req.backend_hint

We need req.backend_hint in vcl_hit to enable different
grace times depending on backend health.
Make varnishstat use the -w update interval argument in curses mode.
Update the varnishstat documentation to reflect the implementation
On pipe, if we don't get a backend log it to shmlog
Typo

Spotted by:	Ruben
Wording
Install cache_backend.h with the vmod headers