atk 'missing symbols' problem since gnome-3-14

[John Emmas <johne53 tiscali co uk>]

Is this a suitable place for flagging up problems with libatk?  Do 
please let me know if it has a dedicated mailing list somewhere.  I 
couldn't find one.  In the meantime....

I've been building libatk (with MSVC) for many years.  I build from the 
sources in Git and typically, I synchronize with whichever branch is the 
current stable branch (until very recently, this was "gnome-3-12" in the 
case of libatk).

Then (a few days ago) gnome-3-14 got released as the new stable branch.  
Since then, I can't seem to build it properly with MSVC. Technically, it 
does actually build - but the following symbols seem to be missing now 
from the built DLL:-

       atk_coord_type_get_type
       atk_layer_get_type
       atk_role_get_type
       atk_relation_type_get_type
       atk_state_type_get_type
       atk_text_attribute_get_type
       atk_text_boundary_get_type
       atk_text_clip_type_get_type

There may be others too - but those are the immediately obvious ones.  
Version 2.12 (i.e. gnome-3-12) used to generate a module definition for 
the linker (which helpfully contained the above symbols) but version 
2.14 (gnome-3-14) doesn't use any module definition file AFAICT.  And 
unless I'm missing something, the above symbols have nothing to mark 
them as dllexport.  Nevertheless, they get called from atkmm (and hence, 
MSVC complains that it can't find them).  It's possible that something's 
gone awry at my end but I just wondered if this is known about?  Thanks.

John