enable builtin caching and cleanup

Cython/Compiler/Options.py

@@ -3,7 +3,7 @@
 #
 
 intern_names = 1    #  Intern global variable and attribute names
-cache_builtins = 0  #  Perform lookups on builtin names only once
+cache_builtins = 1  #  Perform lookups on builtin names only once
 
 embed_pos_in_docstring = 0
 gcc_branch_hints = 1
@@ -18,4 +18,4 @@ incref_local_binop = 0
 
 # Decref global variables in this module on exit for garbage collection. 
 # 0: None, 1+: interned objects, 2+: cdef globals, 3+: types objects
-generate_cleanup_code = 0
+generate_cleanup_code = 3