Rename parser_perftest to depfile_parser_perftest.
Merge pull request #739 from nico/ren

Rename parser_perftest to depfile_parser_perftest.
Add a .clang-format file.

This isn't meant to be authoritative. It's good enough to let the
"indent current line using clang-format" hotkey do the right thing often
enough to be useful.
Merge pull request #740 from nico/formatfile

Add a .clang-format file.
Disable rtti for gtest on no Windows platform.

See: https://github.com/martine/ninja/pull/254