Document changes for 3.0.5 rc
Changes for 3.0.5
Add missing dependency on rt
Clarify that this output isn't build critical
Some additional files from make check
Prepare for a 4.0-TP2 release
Add VCL 4.0 marker in default.vcl.

Fixes: #1413
Add changes 4.0.0TP1->TP2
Revert "Ensure present dependency on vsc_fields.h"

The dependency is defined as part of vsc2rst_SOURCES.
This reverts commit b1b777d.