fix vsix dependency version calculations (#6565)

Author: brettfo

vsintegration/Vsix/Directory.Build.targets

@@ -0,0 +1,8 @@
+<Project>
+
+  <Import Project="$([MSBuild]::GetPathOfFileAbove('Directory.Build.targets', '$(MSBuildThisFileDirectory)../'))" />
+
+  <Target Name="GetVSGeneralVersion" Returns="$(VSGeneralVersion)">
+  </Target>
+
+</Project>

vsintegration/Vsix/VisualFSharpFull/Source.extension.vsixmanifest

@@ -9,7 +9,7 @@
     <MoreInfo>https://docs.microsoft.com/en-us/dotnet/articles/fsharp/</MoreInfo>
   </Metadata>
   <Installation Experimental="true">
-    <InstallationTarget Id="Microsoft.VisualStudio.Pro" Version="[|%CurrentProject%;GetVSGeneralVersion|]" />
+    <InstallationTarget Id="Microsoft.VisualStudio.Pro" Version="[|%CurrentProject%;GetVSGeneralVersion|,)" />
   </Installation>
   <Installer>
     <Actions>

vsintegration/Vsix/VisualFSharpFull/VisualFSharpFull.csproj

@@ -263,6 +263,4 @@
     <PackageReference Include="Newtonsoft.Json" Version="$(NewtonsoftJsonPackageVersion)" />
   </ItemGroup>
 
-  <Target Name="GetVSGeneralVersion" Returns="$(VSGeneralVersion)" />
-
 </Project>

vsintegration/Vsix/VisualFSharpTemplates/Source.extension.vsixmanifest

@@ -10,7 +10,7 @@
     <MoreInfo>https://docs.microsoft.com/en-us/dotnet/articles/fsharp/</MoreInfo>
   </Metadata>
   <Installation Experimental="true">
-    <InstallationTarget Id="Microsoft.VisualStudio.Pro" Version="[15.0]" />
+    <InstallationTarget Id="Microsoft.VisualStudio.Pro" Version="[|%CurrentProject%;GetVSGeneralVersion|,)" />
   </Installation>
   <Dependencies>
     <Dependency Id="Microsoft.Framework.NDP" DisplayName="Microsoft .NET Framework" d:Source="Manual" Version="[4.6,)" />
@@ -21,7 +21,7 @@
     <Asset Type="Microsoft.VisualStudio.ProjectTemplate" d:Source="Project" Path="ProjectTemplates" d:TargetPath="|LibraryProject;TemplateProjectOutputGroup|" d:ProjectName="LibraryProject" d:VsixSubPath="ProjectTemplates" />
   </Assets>
   <Prerequisites>
-    <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[15.0,16.0)" DisplayName="Visual Studio core editor" />
+    <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[|%CurrentProject%;GetVSGeneralVersion|,)" DisplayName="Visual Studio core editor" />
   </Prerequisites>
 
 </PackageManifest>