shiny: add OpenBSD support

We mostly re-use existing X11/Linux or X11/Dragonfly code.

Notes:
 - in OpenBSD, all X11 headers are in /usr/X11R6, thus we need to add this to the linker and include paths
 - in OpenBSD, we seem to need to open MIT-SHM segments with 0666 rights - this could be fixed by passing the SHM segment by file descriptor instead, via X_ShmAttachFd & co.

Change-Id: I2c2d50b5f8d9f1ee2c9c64d131b556d5e337be6f
Reviewed-on: https://go-review.googlesource.com/79917
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
7 files changed
tree: 814beea9a9d9c8355f91cbe2162a86689ab7b57a
  1. ebnf/
  2. ebnflint/
  3. fsnotify/
  4. inotify/
  5. io/
  6. mmap/
  7. old/
  8. rand/
  9. shiny/
  10. shootout/
  11. utf8string/
  12. winfsnotify/
  13. .gitattributes
  14. .gitignore
  15. AUTHORS
  16. codereview.cfg
  17. CONTRIBUTING.md
  18. CONTRIBUTORS
  19. LICENSE
  20. PATENTS
  21. README.md
README.md

exp

This subrepository holds experimental and deprecated (in the old directory) packages.

The idea for this subrepository originated as the pkg/exp directory of the main repository, but its presence there made it unavailable to users of the binary downloads of the Go installation. The subrepository has therefore been created to make it possible to go get these packages.

Warning: Packages here are experimental and unreliable. Some may one day be promoted to the main repository or other subrepository, or they may be modified arbitrarily or even disappear altogether.

In short, code in this subrepository is not subject to the Go 1 compatibility promise. (No subrepo is, but the promise is even more likely to be violated by go.exp than the others.)

Caveat emptor.