Import OpenSSL 1.1.0f

doc/crypto/ERR_clear_error.pod

@@ -20,10 +20,15 @@ ERR_clear_error() has no return value.
 
 =head1 SEE ALSO
 
-L<err(3)|err(3)>, L<ERR_get_error(3)|ERR_get_error(3)>
+L<ERR_get_error(3)>
 
-=head1 HISTORY
+=head1 COPYRIGHT
 
-ERR_clear_error() is available in all versions of SSLeay and OpenSSL.
+Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the OpenSSL license (the "License").  You may not use
+this file except in compliance with the License.  You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
 
 =cut