NaCl: Update revision in DEPS, r7158 -> r7169

NaCl: Update revision in DEPS, r7158 -> r7169

This pulls in the following Native Client changes:

r7159: (pdox) Get rid of ld_script_arm_untrusted.
r7160: (pdox) Merge with LLVM up to r144148.
r7161: (mseaborn) Scons: Split up run_stubout_mode_test
r7162: (pdox) * Rebase build.sh and merge-tool.sh to run inside pnacl/ instead of native_client/.
r7163: (pdox) Fix the thread_test on PNaCl-GlibC by enabling target-specific defines for X86-64 for this test.
r7164: (robertm) Fix the package order for installing the trusted arm TC
r7165: (mcgrathr) Don't link with libcrt_platform.a, which is now empty
r7166: (pdox) Update toolchain DEPS to 7161.
r7167: (chrome-admin) Update .DEPS.git
r7168: (mseaborn) x86-64 Windows: Make the stack unwindable inside NaCl syscall handlers
r7169: (jasonwkim) Fix build breakage

BUG=none
TEST=nacl_integration

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=110338

[Mark Seaborn, 2011-11-15 21:52:22]

Today's DEPS update.

[Nick Bray (chromium), 2011-11-15 22:00:51]

LGTM