Backport additional spec fixes from upstream
- Remove redundat Requires versions that are already in Fedora 17
- Replace python-crypto Requires with m2crypto
- Add missing Requires(post) for client and server-trust-ad subpackages
- Restart httpd service when server-trust-ad subpackage is installed
- Bump selinux-policy Requires to pick up PKI/LDAP port labeling fixes