PNaCl: Update LLVM revision in pnacl/COMPONENT_REVISIONS

PNaCl: Update LLVM revision in pnacl/COMPONENT_REVISIONS

This pulls in the following LLVM changes:

44f58b6: (petar.jovanovic@rt-rk.com) [MIPS] Set pnacl-llc arguments for MIPS
74a458c: (petar.jovanovic@rt-rk.com) [MIPS] Force UseReadOnlyJumpTables to true for NaCl subtarget
d62b2e9: (kschimpf@google.com) Fix handling of TYPE_CODE_NUMENTRY record when size large.
9b9fd38: (kschimpf@google.com) Extend the munging bitcode records to generate text records.
3389b3d: (kschimpf@google.com) Modify pnacl-{llc,thaw} to read textual bitcode records.
93d4c96: (kschimpf@google.com) Make function readNaClRecordTextAndBuildBitcode public.
8457aca: (kschimpf@google.com) Fix error category handling in textual bitcode reader.
0606321: (jpp@chromium.org) Subzero. Adds x86-64 to the list of supported Subzero targets.
bf00952: (jpp@chromium.org) Removes x86_64 from ALL_TARGETS.
9ad211b: (dschuff@chromium.org) Stub out DISubprograms that point to functions without dbg attachments

BUG= arguments are wrong for MIPS
BUG= https://code.google.com/p/nativeclient/issues/detail?id=4195
BUG= https://code.google.com/p/nativeclient/issues/detail?id=4169
BUG= https://code.google.com/p/nativeclient/issues/detail?id=4211
BUG= https://code.google.com/p/nativeclient/issues/detail?id=4077
BUG=
BUG= https://code.google.com/p/nativeclient/issues/detail?id=4200
TEST= PNaCl toolchain trybots
R=jpp@chromium.org

Committed: https://chromium.googlesource.com/native_client/src/native_client/+/3e51032a7156a948d03edcc4e4a919ace972becf

[Derek Schuff, 2015-06-24 15:59:18]

dschuff@chromium.org changed reviewers:
+ jfb@chromium.org

[John, 2015-06-24 16:00:16]

jpp@chromium.org changed reviewers:
+ jpp@chromium.org

[John, 2015-06-24 16:00:17]

lgtm

[Derek Schuff, 2015-06-24 16:33:24]

Committed patchset #1 (id:1) manually as
3e51032a7156a948d03edcc4e4a919ace972becf (presubmit successful).