Improve 3.4 ifelse inside a lambda

Fixes #426

Author: rocky

test/bytecode_3.3/03_ifelse_in_lambda.pyc

@@ -0,0 +1,4 @@
+# Next line is 1164
+def foo():
+    name = "bar"
+    lambda x: compile(x, "<register %s's commit>" % name, "exec") if x else None

test/bytecode_3.4/03_ifelse_in_lambda.pyc

@@ -53,6 +53,10 @@ def p_misc34(self, args):
         _ifstmts_jump ::= c_stmts_opt JUMP_ABSOLUTE JUMP_FORWARD COME_FROM
 
         genexpr_func ::= LOAD_ARG _come_froms FOR_ITER store comp_iter JUMP_BACK
+
+        if_exp_lambda      ::= expr jmp_false expr return_if_lambda return_stmt_lambda LAMBDA_MARKER
+        return_if_lambda   ::= RETURN_END_IF_LAMBDA come_froms
+        return_if_stmt     ::= return_expr RETURN_END_IF POP_BLOCK
         """
 
     def customize_grammar_rules(self, tokens, customize):

test/bytecode_3.5/03_ifelse_in_lambda.pyc

@@ -108,7 +108,6 @@ def p_35on(self, args):
         # Python 3.5+ does jump optimization
         # In <.3.5 the below is a JUMP_FORWARD to a JUMP_ABSOLUTE.
 
-        return_if_stmt    ::= return_expr RETURN_END_IF POP_BLOCK
         return_if_lambda  ::= RETURN_END_IF_LAMBDA COME_FROM
 
         return            ::= return_expr RETURN_END_IF