Log Message:
Update libfwbuilder and fwbuilder to 2.0.12.  Bugfixes only.

2.0.12:
Bugs fixed in this release:
bug #1455772: Implement more portable fix for converting UTF-8 in
comments. The previous one broke the Windows installer.

2.0.11:
Bugs fixed in this release:
* fixes to make code compile with g++ 4.1.
* bug #1455772: Properly convert comments to/from UTF-8 to ensure the
script is not corrupted when copied to the firewall
* bug #1455748: "make firewall script executable".

Bugs fixed in policy compiler for iptables:
* bug #1375432: avoid using '-m state' twice for stateless rules with
with custom services.
* bug#1364060: change shell pattern to match names of conntrack modules
in Linux 2.6.

Bugs fixed in policy compiler for ipfilter:
* bug #1386226: removed nat.conf when nat rules are removed.
* bug #1393004: use 'egrep -s' on Solaris.