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

This pulls in the following LLVM changes:

3da80fc: (kschimpf@google.com) Fix block bug in "pnacl-bccompress --remove-abbreviations".
378876e: (jfb@chromium.org) Add PassManager to pnacl-abicheck and pnacl-llc

TBR= jvoung@chromium.org
BUG= https://code.google.com/p/nativeclient/issues/detail?id=3870
TEST= PNaCl toolchain trybots

Review URL: https://codereview.chromium.org/322903005

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@13309 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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