Recent python does not make parsetab.py successfully, because some token
regexp is starting with ?i flag. Remove that flag from regex and pass it
as extra flags parameter instead.
4666. [bug] dnssec-keymgr: Domain names beginning with digits (0-9)
could cause a parser error when reading the policy
file. This now works correctly so long as the domain
name is quoted. [RT #45641]
4416. [bug] dnssec-keymgr: Domain names in policy files could
fail to match due to trailing dots. [RT #42807]
Patch submitted by Armin Pech (mail@arminpech.de).
