bunch more __all__ lists
also modified check_all function to suppress all warnings since they aren't
relevant to what this test is doing (allows quiet checking of regsub, for
instance)
diff --git a/Lib/sre_parse.py b/Lib/sre_parse.py
index 635605d..fc3c492 100644
--- a/Lib/sre_parse.py
+++ b/Lib/sre_parse.py
@@ -14,6 +14,9 @@
 
 from sre_constants import *
 
+__all__ = ["Pattern","SubPattern","Tokenizer","parse","parse_template",
+           "expand_template"]
+
 SPECIAL_CHARS = ".\\[{()*+?^$|"
 REPEAT_CHARS = "*+?{"