NaCl: Update revision in DEPS, 58c9abe -> fea15c4

NaCl: Update revision in DEPS, 58c9abe -> fea15c4

Redo DEPS roll from:
  https://codereview.chromium.org/867463008/
Reverted in:
  https://codereview.chromium.org/889163003/
Because the hash was improperly abbreviated. This roll has the proper hash.

I'm mildly troubled that all tests passed.

This pulls in the following Native Client changes:

f02226b: (bbudge@chromium.org) Disable mmap_unittest.cc tests on Windows 64 in Debug...
6bc00f6: (dschuff@chromium.org) Update upstream compiler_rt to HEAD and use official git mirror
55d212c: (phosek@chromium.org) Updates the tools Makefile to work with Git
ccc9c66: (shyamsundarr@chromium.org) Add all remaining avx2 instructions except vgather.
9595661: (jfb@chromium.org) Enable -Werror for LLVM build
aa51c35: (pcc@google.com) Disable -flto when compiling nacl_bootstrap_lib.
476c662: (jfb@chromium.org) PNaCl: Update Subzero and LLVM revision in pnacl/COMPONENT_REVISIONS
2f388a0: (dschuff@chromium.org) Enable SCons testing of arm-nacl-clang on the bots
fea15c4: (bbudge@chromium.org) Disable mmap_unittest.cc tests on Windows 64 in Debug...

BUG=none
TEST=browser_tests and nacl_integration
CQ_EXTRA_TRYBOTS=tryserver.chromium.linux:linux_rel_precise32,linux_arm_compile,linux_nacl_sdk_build
R= mseaborn@chromium.org, bradnelson@chromium.org

Committed: https://crrev.com/0d141491fc5ee89bb8d48389efd99e677a47110d
Cr-Commit-Position: refs/heads/master@{#314077}

[JF, 2015-01-31 22:37:17]

FWIW the deps bump script caused the issue:
  https://codereview.chromium.org/872813004/

[Mark Seaborn, 2015-02-01 00:08:31]

LGTM

[Mark Seaborn, 2015-02-01 00:08:44]

The CQ bit was checked by mseaborn@chromium.org

[commit-bot: I haz the power, 2015-02-01 00:09:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/890173002/1

[commit-bot: I haz the power, 2015-02-01 02:11:10]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-01 02:12:07]

Patchset 1 (id:??) landed as
https://crrev.com/0d141491fc5ee89bb8d48389efd99e677a47110d
Cr-Commit-Position: refs/heads/master@{#314077}