[windows] well detect gpgv.exe location

weboob/core/repositories.py

@@ -765,7 +765,7 @@ class Keyring(object):
             return os.getenv('GPGV_EXECUTABLE')
         paths = os.getenv('PATH', os.defpath).split(os.pathsep)
         for path in paths:
-            for ex in ('gpgv2', 'gpgv'):
+            for ex in ('gpgv2', 'gpgv', 'gpgv2.exe', 'gpgv.exe'):
                 fpath = os.path.join(path, ex)
                 if os.path.exists(fpath) and os.access(fpath, os.X_OK):
                     return fpath