release_6_2_0 (vs2015)

$ mkdir build && cd build
$ cmake -G "Visual Studio 14 2015" ..
...
$ msbuild.exe ALL_BUILD.vcxproj -p:Configuration=RelWithDebInfo
...
$ cmake -G "Visual Studio 14 2015 Win64" ..
...
$ msbuild.exe ALL_BUILD.vcxproj -p:Configuration=RelWithDebInfo
...
$ (cd .. && zip -r RELEASE_6_2_0-vs2015.zip build)
...
$ rm -rf /