Support CODEQL_PATH_TRANSFORMER env var in python path renamer

The new name is required by overlay support.

Author: d10c

python/extractor/semmle/path_rename.py

@@ -25,7 +25,7 @@ def renamer_from_options_and_env(options, logger):
         except (AttributeError, ImportError):
             raise SemmleError("Cannot get renamer from module " + options.renamer)
     else:
-        path_transformer = os.environ.get("SEMMLE_PATH_TRANSFORMER", None)
+        path_transformer = os.environ.get("CODEQL_PATH_TRANSFORMER", None) or os.environ.get("SEMMLE_PATH_TRANSFORMER", None)
         if path_transformer:
             logger.info("Using path transformer '%s'", path_transformer)
             rename = projectlayout.get_renamer(path_transformer)

python/extractor/tests/test_use_projectlayout.py

@@ -19,7 +19,7 @@ def test_layout(self):
 
     def test_invalid_layout(self):
         try:
-            with environment("SEMMLE_PATH_TRANSFORMER", "nonsuch/project-layout"):
+            with environment("CODEQL_PATH_TRANSFORMER", "nonsuch/project-layout"):
                 self.run_extractor("-R", self.src_path)
         except subprocess.CalledProcessError as ex:
             self.assertEqual(ex.returncode, 2)