Disallow copy-construction of BCertificate.

* Prevents accidential creation of multiple instances with
  ownership of same fPrivate.
Style fix: add parameter name

* As pointed out by Axel.
Add less and netcat packages for x86_gcc2

* Waiting for x86 and x86_64 ones before we can remove the built-in
version in Haiku...
Add findutils package for x86_64.