The values found by the parser for the GSocketFamily enum are in fact
constants defined in another header file, so the generated code would be
invalid.
We now hardcode the values through fix-ups. They probably don't
change, and they are also hardcoded in the gir file anyway, so it should
be OK.
Also fix-up a GInetAddress constructor that now gets generated.
The parser automatically groups static functions with the same prefix
into classes, but the right name can't be determined automatically.
In this case, ContentType.GetDescription(...) is much better than
Content.TypeGetDescription(...).
