- Fix for unbound-control on Windows and set TCP socket parameters
more closely.
- Fix windows unbound-control no cert bad file descriptor error.
- Fix unbound-checkconf for control-use-cert.
git-svn-id: https://unbound.nlnetlabs.nl/svn/tags/release-1.7.3@4749 be551aaa-1e26-0410-a405-d3ace91eadb9