Simplify generation of default.vcl somewhat.

echo -e isn't in POSIX so it's not supported by all shells.  Use
printf instead of echo to work around this.

varnishadm already supported -n for getting the connection arguments.
However, unlike the other tools, you needed to pass an -n argument, it
did not default to anything.  It now uses the compiled-in default.

Fixes: #875

We have seen larger than 512 values in the wild, so increase the
default values a bit to give us breathing room.

Get rid of a unused variable, add a missing prototype

Fixes rst-warning in the man-page.

Fixes	#872

"pending" if an input snippet ended with an XML comment or CDATA block.

Not spotted by:	FlexeLint

Fixes: #873

This fixes buildbot problems on Solaris, since the solaris buildbot
runs an ancient gcc.

RHEL5/CentOS 5 has an ancient version of autoconf which doesn't pick
up the necessary runes to enable C99 mode, leading to compilation
failures.  Hack around this in configure.ac

panic.show shows the last panic from the child
panic.clear removes it.

foo.ttl still returns -1. to close gap due to integer second timestamps.

one single header.

Example usage:

	import std;

	sub vcl_recv {
		std.collect(req.http.foo);
	}
	sub vcl_fetch {
		std.collect(beresp.http.bar);
	}

Fixes: #866

ErrWhere()

called vfp->begin.

Fixes: #871, #870

earlier

No wonder gzip support leaked memory...

Orginally this memory came from the the thread workspace so deallocation
was automatic.  Not so when we switched to malloc...

use them for VSM allocation

Spotted by:	Geoff