Cherry pick changes from master to allow it.

Fixes: #1439

Junk after gzip body end would lead to a spinning
thread.

Fixes: #1086

Fixes: #1376

use "nm -an", not "nm -agn" which supresses local symbols.

Let backtrace_symbols() handle anything past _end.

Thanks to James Pearson for the suggestion.

We want VMODs to depend on the right ABI, so we need to provide
something they can depend on.  Do so, and hook that up with the RPM
build process.

trouble gets failed back without VCL involvement.

Fixes	#1367

Spotted by: Coverity

readline doesn't really handle when input comes from a file or pipe,
so only use readline if stdin is a tty.

Thanks to johnnyrun for a patch which was used for inspiration here.

Fixes #1314

Reset vfp when restarting in deliver, in case it has be set in
cnt_fetchbody already.

Fixes: #979

Fixes: #1272

Patch by: ehocdet

pointer as the first element.

Fixes: #1287

07d488cb partially broke varnishlog,
since libvarnishapi did not properly check if both -c and -b were
given.

In addition, varnishd did not emit a tag at the start of a backend
transaction.  Emit BackendXID since that seems appropriate.

Fixes #1325

Make it clearer that vcl_hash is called on lookup, pass and pipe.

read error' when tripping on first_byte_timeout, and 'http read error'
when tripping on between_bytes_timeout (used to be 'http first read
error' in both cases). This now matches current master.

This looks like a bit of forgotten debugging, left by mistake.

Fixes	#1312

See Also:	CVE-2013-4090