ogle/gosym: new package.

This is a fork of $GOROOT/src/pkg/debug/gosym. I intend to add
experimental API, but am not yet ready to make the standard library's
backwards compatibility commitment.

This CL is a straight copy from Go tip with no changes. Future CLs will
add code.
$ cd $GOROOT/src/pkg/debug/gosym
$ hg identify
da7a98d40bd5+ tip

LGTM=r
R=r
https://golang.org/cl/66260043
5 files changed
tree: 949125ec6d4f0ce89aa7ee98c42d9d5c5b207bdb
  1. AUTHORS
  2. CONTRIBUTORS
  3. LICENSE
  4. README
  5. codereview.cfg
  6. gosym/
  7. probe/
  8. socket/