Try to really fix compilation failures of the _ssl module under very old OpenSSLs.
diff --git a/Lib/ssl.py b/Lib/ssl.py
index 0282ee9..e899059 100644
--- a/Lib/ssl.py
+++ b/Lib/ssl.py
@@ -68,12 +68,16 @@
 from _ssl import CERT_NONE, CERT_OPTIONAL, CERT_REQUIRED
 from _ssl import (
     OP_ALL, OP_NO_SSLv2, OP_NO_SSLv3, OP_NO_TLSv1,
-    OP_CIPHER_SERVER_PREFERENCE, OP_SINGLE_DH_USE, OP_SINGLE_ECDH_USE,
+    OP_CIPHER_SERVER_PREFERENCE, OP_SINGLE_DH_USE
     )
 try:
     from _ssl import OP_NO_COMPRESSION
 except ImportError:
     pass
+try:
+    from _ssl import OP_SINGLE_ECDH_USE
+except ImportError:
+    pass
 from _ssl import RAND_status, RAND_egd, RAND_add, RAND_bytes, RAND_pseudo_bytes
 from _ssl import (
     SSL_ERROR_ZERO_RETURN,