Added :xray command, :show renamed :list.
using namespace is not emitted for detail(s) namespaces.
To detect boost library, getQualifiedNamespace extended to search in code as well.
Fix: using all arguments of :xray command
Fix: make_default can't use const qualifier and therefore it is removed.
Extended xray function with various type traits.
2.8: Added additional traits (list complete with clang and libc++).