NuGetOuputDirectory - NuGet.exe pack -outputdir doesn't like trailing slashes

[dazinator]

The msbuild property for the NuGet pack output directory is set:

$(SolutionDir)

however this has a trailing slash that causes NuGet.exe pack command to fall over when passing it through as the outputdir argument.

The solution is the trim the trailing slash:

$(SolutionDir.TrimEnd(''))

This problem with NuGet was recorded here: https://nuget.codeplex.com/workitem/901