Misc bugs

parse2.py: restore accidently-removed while1stmt rule
scanner27.py: grammar typo
check_ast: add while1else to list of looping constructs
pysource.py: CALL_FUNCTION_VAR_KW_ARGS with positional args rule is different?

uncompyle6/semantics/pysource.py

@@ -1786,7 +1786,9 @@ class SourceWalker(GenericASTTraversal, object):
                     str += '*%c, **%c)'
                     # Python 3.5 only puts optional args (the VAR part)
                     # lowest down the stack
-                    if self.version == 3.5:
+                    na = (v & 0xff)  # positional parameters
+                    if self.version == 3.5 and na == 0:
+                        print("XXX", k)
                         if p2[2]: p2 = (2, -2, ', ')
                         entry = (str, 0, p2, 1, -2)
                     else: