switch everything to the now-standardized thread_local

We're only using compilers new enough to support it now, so just use it
without a compatibility layer in between.

Change-Id: I97a24ed344e3d4ccde0b04af9c44995cf417a635
5 files changed
tree: 5ef565e2de4a5cc358f041c183cf0e524904898a
  1. aos/
  2. doc/
  3. frc971/
  4. output/
  5. vision/
  6. .clang-format
  7. .gitignore
  8. README.txt