Mscorlib comes from non PDB dir

Author: mmitche

src/.nuget/Microsoft.DotNet.CoreCLR.Development.nuspec

@@ -25,12 +25,13 @@
     <file src="..\mscorlib.dll" target="bin\mscorlib.dll" />
     <file src="..\PDB\clretwrc.pdb" target="bin\clretwrc.pdb" />
     <file src="..\PDB\coreclr.pdb" target="bin\coreclr.pdb" />
+    <file src="..\PDB\corerun.pdb" target="bin\corerun.pdb" />
     <file src="..\PDB\mscordaccore.pdb" target="bin\mscordaccore.pdb" />
     <file src="..\PDB\mscordbi.pdb" target="bin\mscordbi.pdb" />
     <file src="..\PDB\mscorrc.pdb" target="bin\mscorrc.pdb" />
     <file src="..\PDB\mscorrc.debug.pdb" target="bin\mscorrc.debug.pdb" />
     <file src="..\PDB\corerun.pdb" target="bin\corerun.pdb" />
-    <file src="..\PDB\mscorlib.pdb" target="bin\mscorlib.pdb" />
+    <file src="..\mscorlib.pdb" target="bin\mscorlib.pdb" />
     <file src="..\inc\cor.h" target="inc\cor.h" />
     <file src="..\inc\corerror.h" target="inc\corerror.h" />
     <file src="..\inc\corhdr.h" target="inc\corhdr.h" />