Add separate project file for VS2013

Easier than trying to figure out how to make the VC2010 projec work
with VS2013, it seems. We only need a project file for the lcms2_DLL
project.

Change-Id: Icab47ac7625b9a492942ea0835fe52ef06cdf2d9
Add separate project file for VS2013

Easier than trying to figure out how to make the VC2010 project work
with VS2013, it seems. Luckily it works fine tojust have VS2013
upgrade the old project file and then pass that to msbuild.

Change-Id: I94c0248211767d97f2898f35b1b677aee372a329