Additional configuration of @internal phpdoc

http://docs.phpdoc.org/references/phpdoc/tags/internal.html

The @internal tag is used to denote that associated Structural Elements are elements internal to this application or library. It may also be used inside a long description to insert a piece of text that is only applicable for the developers of this software.

Current behaviour of @internal is almost same as @deprecated. Since we're using internal sometimes in our projects we would like that we can normally use functions marked as @internal inside our project @internal method should  not be striked through, but when you're using it from other libraries (other composer packages) then it should. Would be cool to be able to have that configurable on namespace levels as well

Opinions?