Cause:

  9e07b947 Add a new VRT_acl_match function to the VMODs ABI

0a05e52c and friends are missing in 4.1.

VRT_MINOR_VERSION needs to be incremented for the 4.1 branch.

We'll need to change a couple of signatures in the call paths getting here
to propagate up the failure.

Pointed out by nirn on irc.

Original test case by fgsch

Fixes: #1858

This fix avoids a WS_Alloc panic when pushing fetch processors
and should thus avoid panics by overflowing the backend workspace in vcl.

This overflow is logged as FetchError "Bo workspace overflowed".

Other panic points due to workspace_backend being set too low still exist.

Sizing estimate for workspace_backend:

	sizeof(struct busyobj)
	+ 3 * HTTP_estimate(cache_param->http_max_hdr)
	+ cache_param->vsl_buffer
	+ cache_param->http_resp_size
	+ fetch processor memory
	+ space required in VCL

Fixes #1739

Allow to split https URI in the request line

Some submitted by: github::sublimino

None of it was important or troubling.

MERGE NOTE: Changes for gcc 4.9 in the spirit of 2039d8 added.

WS_Assert allows the workspace to be full in its check that `ws->f <= ws->e`.
WS_Reset does not honor this; if a snapshot was taken of a full workspace, and
that snapshot is reverted with WS_Reset, we panic.

This issue was identified by Jozef Hatala <jozef@fastly.com>

Just warn unless --strict is used.  This allows to use the same .vcc in
4.0 and 4.1.

When building multiple vmods from the same source directory,
vmodtool would trample on other concurrent jobs' vcc_if.[ch].

Discussed with phk@.  Fix confirmed by geoff@.

Fixes #1844.

Pointed out by phk@.

I've verified the rest and only these 2 were affected.

tour through vcl_recv{}