tree 2df31f79a18ef03bf239fd1de7133ced07e54287
parent 74cc6bc5545ab3fc63f459e98d1a4202a65010d6
author Scott Todd <scotttodd@google.com> 1653332854 -0700
committer GitHub <noreply@github.com> 1653332854 -0700
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Move Bazel code from iree/ into build_tools/bazel/. (#9149)

Progress on https://github.com/google/iree/issues/8955. After this, the `iree/` directory will only contain the `test/` subdirectory, with minimal supporting build/test system files.

* Move iree/build_defs.oss.bzl to build_tools/bazel/. 
  Also alphabetized load() statements and added copyright headers to files that were missing them.
* Move config_settings from iree/BUILD.bazel to build_tools/bazel/. 
  Also cleaned up some related Bazel files.
* Set Bazel's default lit.cfg.py from //iree to //iree/test. 
  Compiler/ overrides it as needed. Only iree/test/ relies on the default.