Fix for SF [ 734869 ] Lambda functions in list comprehensions

The compiler was reseting the list comprehension tmpname counter for each function, but the symtable was using the same counter for the entire module.  Repair by move tmpname into the symtable entry.

Bugfix candidate.
diff --git a/Python/symtable.c b/Python/symtable.c
index e48eaea..f86fd2f 100644
--- a/Python/symtable.c
+++ b/Python/symtable.c
@@ -61,6 +61,7 @@
 
 	ste->ste_optimized = 0;
 	ste->ste_opt_lineno = 0;
+	ste->ste_tmpname = 0;
 	ste->ste_lineno = lineno;
 	switch (type) {
 	case funcdef: