This is used by the "Application Class" demo... so this should be built
as well especially as we are getting gspawn-win{32|64}-helper.exe fixed
on Visual Studio 2005 (and later) builds.
Update the Visual Studio projects for gtka11y and the completion of the
projects that go along with it. This have been distcheck'ed on my Ubuntu
12.04 system.
-Rename the "libgail" projects to gtka11y, for consistency with the
autotools builds
-Update the projects completion in gtk/a11y/Makefile.am, as the sources are
now listed under $(libgtka11y_la_SOURCES) instead of $(libgail_la_SOURCES)