Disable MSB4011 duplicate import warning (#227)

build/KoreBuild.ps1

@@ -117,6 +117,7 @@ if ("${env:CI}${env:APPVEYOR}${env:TEAMCITY_VERSION}${env:TRAVIS}" -eq "")
 
 $msBuildArguments = @"
 /nologo
+/nowarn:MSB4011
 /m
 /p:RepositoryRoot="$repoFolder/"
 /fl
@@ -136,5 +137,5 @@ $msBuildArguments | Out-File -Encoding ASCII -FilePath $msBuildResponseFile
 
 # workaround https://github.com/dotnet/core-setup/issues/1664
 "{ `"sdk`": { `"version`": `"$dotnetVersion`" } }" | Out-File "$repoFolder/global.json" -Encoding ascii
-exec dotnet msbuild /nologo $preflightClpOption /t:Restore /p:PreflightRestore=true "$makeFileProj"
+exec dotnet msbuild /nologo /nowarn:MSB4011 $preflightClpOption /t:Restore /p:PreflightRestore=true "$makeFileProj"
 exec dotnet msbuild `@"$msBuildResponseFile"

build/KoreBuild.sh

@@ -173,6 +173,7 @@ fi
 
 cat > $msbuildPreflightResponseFile <<ENDMSBUILDPREFLIGHT
 /nologo
+/nowarn:MSB4011
 /p:NetFxVersion=$netfxversion
 /p:PreflightRestore=true
 /p:RepositoryRoot="$repoFolder/"
@@ -188,6 +189,7 @@ __exec dotnet msbuild @"$msbuildPreflightResponseFile"
 
 cat > $msbuildResponseFile <<ENDMSBUILDARGS
 /nologo
+/nowarn:MSB4011
 /m
 /p:RepositoryRoot="$repoFolder/"
 /fl