title: How to build some project configurations with msbuild
body: <p>The gtest's msvc directory has the gtest project file, and opening it with Visual Studio enables me to select the build out of 8 configurations(gtest/gtest_main/gtest_prod_test/gtest_unittest x release/debug) with Batch Build.</p>
  
  <p>How can I do the same thing with <em>msbuild</em> tool? For example, how can I tell msbuild to build gtest/Debug or gtest_unittest/Release? </p>