add evtshared.h to the MSVC project files

visualc/sharedspice.vcxproj

@@ -512,6 +512,7 @@
     <ClInclude Include="..\src\include\ngspice\enh.h" />
     <ClInclude Include="..\src\include\ngspice\enhtypes.h" />
     <ClInclude Include="..\src\include\ngspice\evt.h" />
+    <ClInclude Include="..\src\include\ngspice\evtshared.h" />
     <ClInclude Include="..\src\include\ngspice\evttypes.h" />
     <ClInclude Include="..\src\include\ngspice\evtproto.h" />
     <ClInclude Include="..\src\include\ngspice\evtudn.h" />

visualc/vngspice-fftw.vcxproj

@@ -950,6 +950,7 @@ lib /machine:x64 /def:..\..\fftw-3.3.4-dll64\libfftw3-3.def /out:$(IntDir)libfft
     <ClInclude Include="..\src\include\ngspice\enh.h" />
     <ClInclude Include="..\src\include\ngspice\enhtypes.h" />
     <ClInclude Include="..\src\include\ngspice\evt.h" />
+    <ClInclude Include="..\src\include\ngspice\evtshared.h" />
     <ClInclude Include="..\src\include\ngspice\evttypes.h" />
     <ClInclude Include="..\src\include\ngspice\evtproto.h" />
     <ClInclude Include="..\src\include\ngspice\evtudn.h" />

visualc/vngspice.vcxproj

@@ -916,6 +916,7 @@
     <ClInclude Include="..\src\include\ngspice\enh.h" />
     <ClInclude Include="..\src\include\ngspice\enhtypes.h" />
     <ClInclude Include="..\src\include\ngspice\evt.h" />
+    <ClInclude Include="..\src\include\ngspice\evtshared.h" />
     <ClInclude Include="..\src\include\ngspice\evttypes.h" />
     <ClInclude Include="..\src\include\ngspice\evtproto.h" />
     <ClInclude Include="..\src\include\ngspice\evtudn.h" />