And add it to the libwebm VS2013 solution. Change-Id: I9957b47b291722bc0e5eb435795252cf780f968b
Basically identical to the 2010 projects, but with platform toolset set to VS 2013, and output files/paths updated to avoid collisions with VS 2010 output. Change-Id: I02b827288319db22eeb0beeed71261dc0673d6ef