Subzero: Make life a little easier for emacs users.

Subzero: Make life a little easier for emacs users.

Emacs will try to execute .dir-locals.el whenever loading a file under
the subzero directory.  It sets local variables depending on the mode.

Set the fill-column to 80 for c++-mode, c-mode, and python-mode.  The
main use is when using M-q to reformat multi-line comments.

Disable tabs (use spaces instead) in c++-mode, c-mode, and
python-mode.

Set the tab-width to 2 spaces in python-mode.  (The tab-width doesn't
really matter in c++-mode or c-mode thanks to clang-format.)

BUG= none
R=kschimpf@google.com

Committed: https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a=commit;h=8fa8b4378ac13fa0ed0196e8dd1a5c642a8049d7

[Jim Stichnoth, 2015-06-23 18:03:47]

stichnot@chromium.org changed reviewers:
+ jpp@chromium.org, jvoung@chromium.org, kschimpf@google.com

[John, 2015-06-23 18:10:54]

Perhaps this will avoid the need for -*- C++ -*-:

(add-to-list 'auto-mode-alist '("\\.h\\'" . c++-mode))

[Karl, 2015-06-23 18:11:45]

lgtm

[Jim Stichnoth, 2015-06-23 18:16:17]

Committed patchset #1 (id:1) manually as
8fa8b4378ac13fa0ed0196e8dd1a5c642a8049d7 (presubmit successful).