Rollback ^:deprecated on ns-name

[arrdem]

ns-name has a distinct purpose, [Namespace] -> Symbol which is distinct from name being [Named] -> String. While most uses of ns-name were of the form (name (ns-name (the-ns ...))), that doesn't mean that dropping ns-name to ^:deprecated status was a great idea.

A better change would have been to move the old Namespace.getName():Symbol to Namespace.getNamingSymbol():Symbol or something and then to preserve ns-name using the explicit Symbol getter.