* lang_php/analyze/foundation/graph_code_php.ml: better dupe diagnostics
* lang_php/analyze/foundation/graph_code_php.ml: refactoring
* lang_php/analyze/foundation/graph_code_php.ml: remove dead code
* lang_php/analyze/foundation/graph_code_php.ml:
* tests/php/codegraph/skip_list.txt: better handling of scripts/ and their error
* tests/php/codegraph/scripts/redefine_regular_function.php: handle