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)