cartographer

Add .gitignore to hide the "build" directory (#40) 2016-10-11 00:07:48 +08:00			`build`
Add a Bazel build for cartographer (#834) This does not include cartographer_grpc, nor any of the binaries (*_main.cc). It has been tested with Bazel 0.9.0 on Ubuntu 14.04 with the latest (at time of writing) dazel/dazel container, by running: ``` bazel build //... bazel test //... ``` While this is a large CL, the files under third_party are not new - they have been through internal review, and this is their open-source release. The other files come to 212 lines of code. 2018-01-22 23:47:07 +08:00			`bazel-*`