Manually add the attribute for projects that don't reference S.R.InteropServices but have DllImports.

Author: AlexGhiondea

src/System.DirectoryServices.AccountManagement/src/System.DirectoryServices.AccountManagement.csproj

@@ -9,6 +9,7 @@
     <NoWarn>$(NoWarn);8073</NoWarn>
     <!-- Although we have a netstandard configuration, we know we are not currently UAP compatible-->
     <UWPCompatible>false</UWPCompatible>
+    <IncludeDllSafeSearchPathAttribute>true</IncludeDllSafeSearchPathAttribute>
   </PropertyGroup>
   <!-- Help VS understand available configurations -->
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'netstandard-Windows_NT-Debug|AnyCPU'" />

src/System.DirectoryServices.Protocols/src/System.DirectoryServices.Protocols.csproj

@@ -8,6 +8,7 @@
     <NoWarn>$(NoWarn);0649</NoWarn>
     <!-- Although we have a netstandard configuration, we know we are not currently UAP compatible-->
     <UWPCompatible>false</UWPCompatible>
+    <IncludeDllSafeSearchPathAttribute>true</IncludeDllSafeSearchPathAttribute>
   </PropertyGroup>
   <!-- Help VS understand available configurations -->
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'netstandard-Windows_NT-Debug|AnyCPU'" />

src/System.IO.Ports/src/System.IO.Ports.csproj

@@ -6,7 +6,8 @@
     <ProjectGuid>{187503F4-BEF9-4369-A1B2-E3DC5D564E4E}</ProjectGuid>
     <IsPartialFacadeAssembly Condition="'$(TargetGroup)' == 'netfx'">true</IsPartialFacadeAssembly>
     <GeneratePlatformNotSupportedAssemblyMessage Condition="'$(TargetGroup)' == 'netstandard' AND '$(TargetsWindows)' != 'true'">SR.PlatformNotSupported_IOPorts</GeneratePlatformNotSupportedAssemblyMessage>
-  </PropertyGroup>
+    <IncludeDllSafeSearchPathAttribute>true</IncludeDllSafeSearchPathAttribute>
+</PropertyGroup>
   <!-- Default configurations to help VS understand the options -->
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'netfx-Debug|AnyCPU'" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'netfx-Release|AnyCPU'" />

src/System.Net.Http.WinHttpHandler/src/System.Net.Http.WinHttpHandler.csproj

@@ -9,6 +9,7 @@
     <GeneratePlatformNotSupportedAssemblyMessage Condition="'$(TargetGroup)' == 'netstandard' AND '$(TargetsWindows)' != 'true'">SR.PlatformNotSupported_WinHttpHandler</GeneratePlatformNotSupportedAssemblyMessage>
     <!-- Although we have a NS configuration, the actual UWP implementation is a shim over WinRT: so just validate against OneCore -->
     <UWPCompatible>false</UWPCompatible>
+    <IncludeDllSafeSearchPathAttribute>true</IncludeDllSafeSearchPathAttribute>
   </PropertyGroup>
   <!-- Help VS understand available configurations -->
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'netfx-Windows_NT-Debug|AnyCPU'" />

src/System.Runtime.Extensions/src/System.Runtime.Extensions.csproj

@@ -7,6 +7,7 @@
     <OutputType>Library</OutputType>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <IsPartialFacadeAssembly>true</IsPartialFacadeAssembly>
+    <IncludeDllSafeSearchPathAttribute>true</IncludeDllSafeSearchPathAttribute>
   </PropertyGroup>
   <!-- Default configurations to help VS understand the configurations -->
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'netcoreapp-Unix-Debug|AnyCPU'" />

src/System.Security.Cryptography.Pkcs/src/System.Security.Cryptography.Pkcs.csproj

@@ -9,7 +9,8 @@
     <ResourcesSourceOutputDirectory Condition="'$(IsPartialFacadeAssembly)' == 'true'">None</ResourcesSourceOutputDirectory>
     <GeneratePlatformNotSupportedAssemblyMessage Condition="'$(TargetGroup)' == 'netstandard' AND '$(TargetsWindows)' != 'true'">SR.PlatformNotSupported_CryptographyPkcs</GeneratePlatformNotSupportedAssemblyMessage>
     <UsePackageTargetRuntimeDefaults Condition="'$(IsPartialFacadeAssembly)' != 'true'">true</UsePackageTargetRuntimeDefaults>
-  </PropertyGroup>
+    <IncludeDllSafeSearchPathAttribute>true</IncludeDllSafeSearchPathAttribute>  
+</PropertyGroup>
   <!-- Don't delete these clauses even if they look useless. They tell the VS IDE that "Windows_Debug", etc., are
        valid configuration for this project and stop it from trying to "fix up" the .sln file -->
   <!-- API types (platform independent) -->