The largest part of this consist of upgrading the boost and pango/cairo
libraries together with their dependencies, supporting files and
project settings. In addition, architecture, SDK and compiler options
are set to use the native versions of the given OS X version for debug
builds. The OS X deployment target is set to OS X 10.8, because of a
change in the default libraries used by OS X from 10.8 to 10.9.
For this to work, the resources in wesnoth_compile_mac_1.13.zip need
to be installed as well.
Some other settings, e.g. font defaults, still need to be adjusted.
This will be done in separate commits. Settings for release builds will
be changed later as well.
Add entries for 1.11.8 and 1.11.9. This should have been done for the
previous two releases, but I did not know about this. It will be done
correctly for 1.11.10.
Thanks to Alarantalara for the pointers.
