fix pylint in qt

pylint fails to read Qt modules when invoked as a subprocess with
-j 0, and it looks like I committed this in the middle of debugging
the issue. Work around it by invoking pylint directly. It's still
awfully slow, taking 30 seconds on a 10 core machine.

qt/.pylintrc

@@ -1,8 +1,7 @@
 [MASTER]
 persistent = no
-extension-pkg-whitelist=PyQt5,ankirspy
-ignore = aqt/forms
-init-hook='from PyQt5.QtWebChannel import QWebChannel; print("successful import!"); import sys; print(sys.path)'
+extension-pkg-whitelist=PyQt5
+ignore = forms
 
 [TYPECHECK]
 ignored-modules=win32file,pywintypes,socket,win32pipe

qt/tests/run_pylint.py

@@ -1,25 +1,21 @@
 import os
 import subprocess
 import sys
+import PyQt5
 
-import PyQt5.QtCore
+from pylint.lint import Run
 
 if __name__ == "__main__":
     (module, ini) = sys.argv[1:]
     ini = os.path.abspath(ini)
 
-    sys.exit(
-        subprocess.run(
+    Run(
         [
-                sys.executable,
-                "-m",
-                "pylint",
-                "qt/aqt/qt.py",
+            "qt/aqt",
             "--rcfile",
             ini,
-                "--extension-pkg-whitelist=PyQt5",
+            "-j",
+            "0",
             "-v",
-            ],
-            check=False,
-        ).returncode
+        ]
     )