update nupkg version evaulation logic in msbuild (#44)

Author: Jinhuafei

tools/RoslynCodeProvider.settings.targets

@@ -8,7 +8,6 @@
         <VersionMajor>1</VersionMajor>
         <VersionMinor>1</VersionMinor>
         <VersionRelease>0</VersionRelease>
-        <VersionRelease Condition="'$(BuildQuality)' != 'rtm'">$(VersionRelease)-$(BuildQuality)</VersionRelease>
     </PropertyGroup>
 
     <PropertyGroup Label="NuGet package dependencies">

tools/version.targets

@@ -36,6 +36,7 @@ Project global versioning targets.
 
   <PropertyGroup>
     <NuGetPackageVersion Condition="'$(NuGetPackageVersion)' == ''">$(VersionMajor).$(VersionMinor).$(VersionRelease)</NuGetPackageVersion>
+    <NuGetPackageVersion Condition="'$(BuildQuality)' != 'rtm'">$(NuGetPackageVersion)-$(BuildQuality)</NuGetPackageVersion>
   </PropertyGroup>
 
   <ItemGroup Condition="'$(VersionFileGenerationEnabled)' == 'true'">