Add charge formulation for non-linear capacitors

visualc/vngspice-fftw.vcxproj

@@ -909,7 +909,6 @@ lib /machine:x64 /def:..\..\fftw-3.3-dll64\libfftw3-3.def /out:$(IntDir)libfftw3
     <ClInclude Include="..\src\frontend\points.h" />
     <ClInclude Include="..\src\frontend\postcoms.h" />
     <ClInclude Include="..\src\frontend\postsc.h" />
-    <ClInclude Include="..\src\frontend\quote.h" />
     <ClInclude Include="..\src\frontend\rawfile.h" />
     <ClInclude Include="..\src\frontend\resource.h" />
     <ClInclude Include="..\src\frontend\runcoms.h" />