add sat folder to netstandard library

fix signing key path and target

.gitignore

@@ -75,4 +75,5 @@ cache/
 **/.vscode/*
 .DS_Store
 
-!tools/netstandard/CreateSigningKey/CreateSigningKey.dll
+tools/netstandard/CreateSigningKey/bin
+tools/netstandard/CreateSigningKey/obj

makefiles/Makefile.csharp.mk

@@ -195,7 +195,7 @@ endif
 netstandardortools: $(BIN_DIR)/$(NETSTANDARD_ORTOOLS_DLL_NAME)$(DLL) $(BIN_DIR)/$(CLR_PROTOBUF_DLL_NAME)$(DLL) 
 
 $(NETSTANDARD_OBJ_DIR)/AssemblyInfo.cs: \
-	$(NETSTANDARD_CLR_KEYFILE) \
+	netstandard_keyfile \
 	$(GEN_DIR)/com/google/ortools/properties/CommonAssemblyInfo.cs
 	$(COPY) tools$Scsharp$SAssemblyInfo.cs $(NETSTANDARD_OBJ_DIR)$SAssemblyInfo.cs
 ifdef CLR_KEYFILE
@@ -297,9 +297,9 @@ ifdef CLR_KEYFILE
 	sn -k $(CLR_KEYFILE)
 endif
 
-$(NETSTANDARD_CLR_KEYFILE):
+netstandard_keyfile:
 ifdef CLR_KEYFILE
-	$(PATH_TO_DOTNET_EXE) run tools$Snetstandard$SCreateSigningKey$SCreateSigningKey.dll $(CLR_KEYFILE)
+	$(PATH_TO_DOTNET_EXE) run --project tools$Snetstandard$SCreateSigningKey$SCreateSigningKey.csproj $(CLR_KEYFILE)
 endif
 
 $(BIN_DIR)/$(CLR_ORTOOLS_DLL_NAME)$(DLL): \

tools/netstandard/CreateSigningKey/CreateSigningKey.csproj

@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>

tools/netstandard/CreateSigningKey/Program.cs

@@ -8,7 +8,6 @@ namespace CreateSigningKey
     {
         static void Main(string[] args)
         {
-            args = new[] { "or-tools.snk" };
             if (args == null || args.Length == 0)
             {
                 Console.WriteLine("Key filename not specified.");

tools/netstandard/OrTools.NetCore.csproj

@@ -49,6 +49,10 @@
       <Link>graph\%(Filename)%(Extension)</Link>
     </Compile>
     
+    <Compile Include="..\..\ortools\com\google\ortools\sat\*.cs">
+      <Link>sat\%(Filename)%(Extension)</Link>
+    </Compile>
+
     <Compile Include="..\..\ortools\gen\com\google\ortools\sat\*.cs">
       <Link>sat\%(Filename)%(Extension)</Link>
     </Compile>