PNaCl: Update LLVM revision in pnacl/DEPS
PNaCl: Update LLVM revision in pnacl/DEPS

This pulls in the following LLVM changes:

ffc13bc: (eliben@chromium.org) Add two passes that implement conversions from PNaCl's specific intrinsics to external function calls during the translation stage (llc).
7b1d0b4: (mseaborn@chromium.org) PNaCl ABI checker: Disallow inline assembly
9a6f5fa: (mseaborn@chromium.org) PNaCl: Extend ExpandMulWithOverflow pass to handle uadd.with.overflow too
dc0ea95: (dschuff@chromium.org) Fix integer promotion pass to handle casts to struct pointer types. Also fix the diagnostic asserts in getPromotedType.
9c2963c: (dschuff@chromium.org) Expess NaClTransforms' dependence on IPO in LLVMBuild instead of CMakeLists.
75e093a: (eliben@chromium.org) Update llc/pnacl-llc makefiles to link nacltransforms.
8d01804: (mseaborn@chromium.org) PNaCl: Disable parts of InstCombine that introduce *.with.overflow intrinsics

BUG= https://code.google.com/p/nativeclient/issues/detail?id=3429
BUG= https://code.google.com/p/nativeclient/issues/detail?id=2345
BUG= https://code.google.com/p/nativeclient/issues/detail?id=3434
BUG= https://code.google.com/p/nativeclient/issues/detail?id=3360
TEST=PNaCl toolchain trybots

Review URL: https://codereview.chromium.org/16180002

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@11414 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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