title: Visual Studio 2012 C++ code coverage merge executables
body: <p>My c++ unit tests use gtest framework so every test is a separate executable. I'm running the CodeCoverage.exe tool to get the raw coverage data of each executable run. When I open the results in Visual Studio, each executable run appears in a separate branch and the results can't be merged together.<br>
  Is there any way to make this work?</p>
  
  <p>One thing I've tried is to specify <code>/session:uniq</code> in the command line for both runs but that didn't have any effect.</p>