docblock generates empty line under @tags if docblock was read from
existing code. it does not generate that line if docblock was created.
namespace of parameter-class becomes absolute although declaring class
is in same namespace (or parent one). This also breaks code, as the
absolute namespace doesnt have a \ in the beginning.
Merge branch 'hotfix/4616'

Close #4616
Fixes #4614
Merge pull request #4617 from mathielen/master

Zend\Code: Docblock generates empty line under @tags if docblock was read from existing code
[#4617] Fix CS

- indentation
Merge branch 'hotfix/4617' into develop

Forward port #4617