Comment # 3 on bug 196 from John Colvin

What is the correct directory? Trying to work it out from the various
directories in that compilation command:

$ pwd
/Users/johncolvin/Git/GDC/objdir
$ find . -name x86_64-apple-darwin15.0.0 -type d
./prev-x86_64-apple-darwin15.0.0/i386/libstdc++-v3/include/x86_64-apple-darwin15.0.0
./prev-x86_64-apple-darwin15.0.0/libstdc++-v3/include/x86_64-apple-darwin15.0.0
./stage1-x86_64-apple-darwin15.0.0/i386/libstdc++-v3/include/x86_64-apple-darwin15.0.0
./stage1-x86_64-apple-darwin15.0.0/libstdc++-v3/include/x86_64-apple-darwin15.0.0
./x86_64-apple-darwin15.0.0
./x86_64-apple-darwin15.0.0/i386/libstdc++-v3/include/x86_64-apple-darwin15.0.0
./x86_64-apple-darwin15.0.0/libstdc++-v3/include/x86_64-apple-darwin15.0.0