Fix of issue https://nuget.codeplex.com/workitem/3282: Invalid URI: The format of the URI could not be determined.
Fix of issue https://nuget.codeplex.com/workitem/3282: Invalid URI: The format of
the URI could not be determined.

The fix is to call Path.GetFullPath(path) so that a path like
"\NuGetPackages" is converted to "x:\NuGetPackages". This is the same
way that repository path is processed in nuget.exe.

OneGet/nuget,mrward/NuGet.V2,pratikkagda/nuget,dolkensp/node.net,pratikkagda/nuget,jmezach/NuGet2,GearedToWar/NuGet2,GearedToWar/NuGet2,jmezach/NuGet2,xoofx/NuGet,xoofx/NuGet,mrward/nuget,rikoe/nuget,dolkensp/node.net,rikoe/nuget,mono/nuget,OneGet/nuget,mrward/nuget,mrward/NuGet.V2,mrward/nuget,oliver-feng/nuget,antiufo/NuGet2,OneGet/nuget,indsoft/NuGet2,RichiCoder1/nuget-chocolatey,oliver-feng/nuget,indsoft/NuGet2,ctaggart/nuget,mono/nuget,GearedToWar/NuGet2,RichiCoder1/nuget-chocolatey,dolkensp/node.net,mrward/NuGet.V2,mrward/NuGet.V2,chocolatey/nuget-chocolatey,jholovacs/NuGet,jholovacs/NuGet,alluran/node.net,antiufo/NuGet2,rikoe/nuget,xoofx/NuGet,oliver-feng/nuget,akrisiun/NuGet,indsoft/NuGet2,ctaggart/nuget,xoofx/NuGet,chocolatey/nuget-chocolatey,oliver-feng/nuget,jholovacs/NuGet,RichiCoder1/nuget-chocolatey,dolkensp/node.net,alluran/node.net,RichiCoder1/nuget-chocolatey,xoofx/NuGet,RichiCoder1/nuget-chocolatey,rikoe/nuget,jmezach/NuGet2,jholovacs/NuGet,chocolatey/nuget-chocolatey,mrward/nuget,xoofx/NuGet,pratikkagda/nuget,RichiCoder1/nuget-chocolatey,jholovacs/NuGet,mrward/NuGet.V2,alluran/node.net,oliver-feng/nuget,mrward/nuget,mrward/NuGet.V2,mono/nuget,alluran/node.net,akrisiun/NuGet,jmezach/NuGet2,ctaggart/nuget,antiufo/NuGet2,chocolatey/nuget-chocolatey,antiufo/NuGet2,GearedToWar/NuGet2,pratikkagda/nuget,jholovacs/NuGet,GearedToWar/NuGet2,mono/nuget,oliver-feng/nuget,mrward/nuget,antiufo/NuGet2,jmezach/NuGet2,OneGet/nuget,indsoft/NuGet2,pratikkagda/nuget,ctaggart/nuget,jmezach/NuGet2,chocolatey/nuget-chocolatey,indsoft/NuGet2,indsoft/NuGet2,chocolatey/nuget-chocolatey,pratikkagda/nuget,antiufo/NuGet2,GearedToWar/NuGet2