remove warnings, add diagnostics

Author: dsyme

tests/service/ExprTests.fs

@@ -684,6 +684,9 @@ let ``Check use of type provider that provides calls to F# code`` () =
         |> checker.ParseAndCheckProject 
         |> Async.RunSynchronously
 
+    for r in res.Errors do 
+       printfn "%d, %d: %s" r.StartLineAlternate r.StartColumn r.Message
+
     res.Errors.Length |> shouldEqual 0
 
     let results = 

tests/service/TestTP/TestTP.fsproj

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>