PNaCl: Update subzero revision in pnacl/COMPONENT_REVISIONS
PNaCl: Update subzero revision in pnacl/COMPONENT_REVISIONS

This pulls in the following Subzero changes:

cbd3dbc: (tlively@google.com) Subzero: Implemented codegen for poisoning and unpoisoning stack redzones
e8392d8: (tlively@google.com) Subzero: Added ASan quarantine for recently freed objects
9b38497: (tlively@google.com) Subzero: Elide redundant access checks within basic blocks
135fbe5: (mohit.bhakkad@imgtec.com) SubZero: Add return registers for float/double types in lowerCall
9a313a8: (tlively@google.com) Subzero: Replace global pointers to allocation functions
48a568d: (tlively@google.com) Subzero: Replace pointers to allocation functions in loads
efdf412: (stichnot@chromium.org) Subzero: Fix build errors with LLVM trunk.
6b0ee2a: (stichnot@chromium.org) Subzero: Include commit count in revision string.
75f5229: (tlively@google.com) Subzero: Replace pointers to allocation functions in stores
c1d6fd5: (tlively@google.com) Subzero: Added address of bad instruction to error output
b1a0fb1: (jaydeep.patil@imgtec.com) [SubZero]Added InstMIPS32Load to differentiate stores from loads
8b32241: (jaydeep.patil@imgtec.com) Provide repointEdges for MIPS.
519fe04: (tlively@google.com) Subzero: Updated documentation to describe building spec2k benchmarks
13f0ca3: (jaydeep.patil@imgtec.com) Delete unconditional branch to the next node.
135f5db: (jaydeep.patil@imgtec.com) [SubZero] Generate ELF output for MIPS
8b21cc5: (stichnot@chromium.org) Subzero: Fix the LLVM trunk build.
29823f1: (jaydeep.patil@imgtec.com) [SubZero] Implement lowerSwitch for MIPS
7c9728f: (stichnot@chromium.org) Subzero: Fix a build error against LLVM trunk.
53dae72: (stichnot@chromium.org) Subzero: Deterministically sort local var stack offsets.
d5e7caf: (capn@google.com) Implement ICE_CACHELINE_BOUNDARY for Visual Studio.
cc8bc16: (stichnot@chromium.org) Subzero: Add the MIPS=1 makefile option for alternate testing mode.
e698313: (nicolascapens@google.com) Merge "Implement ICE_CACHELINE_BOUNDARY for Visual Studio."
a0b720d: (capn@google.com) Simplify ClFlags macro for older C++ standards.
1d0690b: (jaydeep.patil@imgtec.com) [SubZero] Implement load and store for MIPS
c0f1b6f: (capn@google.com) Allow using SZTARGET without PNACL_LLVM.
3db8f7a: (capn@google.com) Fix type alias compilation issue on Windows.
17f04f0: (capn@google.com) Work around Visual Studio static constexpr bug.
dbd600d: (capn@google.com) Enable disabling API-based TLS support.
d739614: (capn@google.com) Fix Visual Studio compilation of types within template classes.
ef9d004: (capn@google.com) Fix unresolved template method definition.
4d70802: (capn@google.com) Add missing header includes.
0e137b2: (capn@google.com) Work around Visual Studio template specialization issue.
86e5d88: (capn@google.com) Ensure NoDefinitions gets initialized only at first use.
a9a92a5: (capn@google.com) Fix initializing the allocator before creating empty vector.
5d5b662: (stichnot@chromium.org) Subzero: Fix a build error.  Also reformat.
84ea9a7: (stichnot@chromium.org) Subzero: Fix target attribute when SZTARGET is defined.
b85cde1: (srdjan.obucina@imgtec.com) Subzero, MIPS32: Introduction of genTargetHelperCallFor
53d0568: (Srdjan.Obucina@imgtec.com) Subzero, MIPS32: Intrinsic calls for ABS.fmt and SQRT.fmt
5a9f714: (Srdjan.Obucina@imgtec.com) Subzero, MIPS32: Handling fptrunc and fpext casting
74bfa87: (stichnot@chromium.org) Subzero: x8664: Fix a "uitofp i32 to double" lowering error.
f315f0d: (Srdjan.Obucina@imgtec.com) Subzero, MIPS32: Floating point comparison
47ef0be: (jaydeep.patil@imgtec.com) [SubZero] Implement address optimization for MIPS

BUG= https://bugs.chromium.org/p/nativeclient/issues/detail?id=4379
BUG= https://bugs.chromium.org/p/nativeclient/issues/detail?id=4374
BUG= swiftshader:7
TEST= PNaCl toolchain trybots
R=dschuff@chromium.org

Review URL: https://codereview.chromium.org/2338003002 .

sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client