Update TOOL_REVISIONS for PNaCl r12832->r12834
Update TOOL_REVISIONS for PNaCl r12832->r12834

Pull the following PNaCl changes into NaCl:
  r12834: (jvoung@google.com) PNaCl: Update LLVM revision in pnacl/COMPONENT_REVISIONS
    | 07e0b23: (jvoung@chromium.org) Make ReduceMemoryFootprint the default when streaming (w/ LazyBitcode).
    | 30a34f0: (jvoung@chromium.org) One more mention of reduce-memory-footprint to remove.

BUG= none
R= jvoung@google.com, jfb@chromium.org
TEST=git try
NOTRY=true
(Please LGTM this change and tick the "commit" box)

Review URL: https://codereview.chromium.org/187633004

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@12839 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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