dhcp: fixed remote denial of service attack

The ISC dhcp server was updated to fix a denial of service attack via regular
expressions:
- Removed regex.h check from configure in bind sources (bnc#811934,
CVE-2013-2266). Make the bind export library build output visible.
[dhcp-4.2.4-P2-no-bind-regex-check.CVE-2013-2266.diff]

Also fixed:
- Added dhcp6-server service template for SuSEfirewall2 (bnc#783002)

Fixed bugs
bnc#783002
Standard firewall blocks IPv6 UDP ports 546 and 5353
bnc#811934
VUL-0: CVE-2013-2266: dhcp: DHCP 4.2.5-P1 update to fix one security issue
Selected Binaries
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