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_compile.py b/Lib/sre_compile.py
index ab2a2cc..18dee88 100644
--- a/Lib/sre_compile.py
+++ b/Lib/sre_compile.py
@@ -12,6 +12,8 @@
 
 from sre_constants import *
 
+__all__ = ["compile"]
+
 assert _sre.MAGIC == MAGIC, "SRE module mismatch"
 
 MAXCODE = 65535