Add gssapi files to msvc project.

builds/msvc/vs2013/libzmq/libzmq.vcxproj

@@ -189,6 +189,9 @@
     <ClInclude Include="..\..\..\..\src\err.hpp" />
     <ClInclude Include="..\..\..\..\src\fd.hpp" />
     <ClInclude Include="..\..\..\..\src\fq.hpp" />
+    <ClInclude Include="..\..\..\..\src\gssapi_client.hpp" />
+    <ClInclude Include="..\..\..\..\src\gssapi_mechanism_base.hpp" />
+    <ClInclude Include="..\..\..\..\src\gssapi_server.hpp" />
     <ClInclude Include="..\..\..\..\src\i_engine.hpp" />
     <ClInclude Include="..\..\..\..\src\i_poll_events.hpp" />
     <ClInclude Include="..\..\..\..\src\io_object.hpp" />
@@ -265,6 +268,9 @@
     <ClCompile Include="..\..\..\..\src\epoll.cpp" />
     <ClCompile Include="..\..\..\..\src\err.cpp" />
     <ClCompile Include="..\..\..\..\src\fq.cpp" />
+    <ClCompile Include="..\..\..\..\src\gssapi_client.cpp" />
+    <ClCompile Include="..\..\..\..\src\gssapi_mechanism_base.cpp" />
+    <ClCompile Include="..\..\..\..\src\gssapi_server.cpp" />
     <ClCompile Include="..\..\..\..\src\io_object.cpp" />
     <ClCompile Include="..\..\..\..\src\io_thread.cpp" />
     <ClCompile Include="..\..\..\..\src\ip.cpp" />

builds/msvc/vs2013/libzmq/libzmq.vcxproj.filters

@@ -205,6 +205,15 @@
     <ClCompile Include="..\..\..\..\src\curve_server.cpp">
       <Filter>src</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\..\src\gssapi_mechanism_base.cpp">
+      <Filter>src</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\..\..\src\gssapi_server.cpp">
+      <Filter>src</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\..\..\src\gssapi_client.cpp">
+      <Filter>src</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\..\..\include\zmq_utils.h">
@@ -456,6 +465,15 @@
     <ClInclude Include="..\..\..\..\src\curve_server.hpp">
       <Filter>src\include</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\..\..\src\gssapi_mechanism_base.hpp">
+      <Filter>src\include</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\..\..\src\gssapi_server.hpp">
+      <Filter>src\include</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\..\..\src\gssapi_client.hpp">
+      <Filter>src\include</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Filter Include="include">