Subzero: Fix a build error against LLVM trunk.

Subzero: Fix a build error against LLVM trunk.

LLVM trunk commit a5479197371e169bc676e0e570f2a994329f8773 split include/llvm/Bitcode/ReaderWriter.h into two separate header files.  This CL hacks it back, in a sense.

With this change (along with the rest of the recent fixes), Subzero builds against the latest LLVM trunk - 759dd39154f0bbf1adc87bf613c95f9564f64aa8 at this writing.

BUG= none
R=kschimpf@google.com

Committed: https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a=commit;h=c78be4ec9c4a1d34d0abed50de0de37a87b4accc

[Jim Stichnoth, 2016-12-26 22:37:51]

Description was changed from

==========
Subzero: Fix a build error against LLVM trunk.

BUG= none
==========

to

==========
Subzero: Fix a build error against LLVM trunk.

LLVM trunk commit a5479197371e169bc676e0e570f2a994329f8773 split
include/llvm/Bitcode/ReaderWriter.h into two separate header files.  This CL
hacks it back, in a sense.

With this change (along with the rest of the recent fixes), Subzero builds
against the latest LLVM trunk - 759dd39154f0bbf1adc87bf613c95f9564f64aa8 at this
writing.

BUG= none
==========

[Jim Stichnoth, 2016-12-26 22:38:18]

stichnot@chromium.org changed reviewers:
+ eholk@chromium.org, jpp@chromium.org, kschimpf@google.com

[Karl, 2016-12-27 00:38:27]

lgtm

[Jim Stichnoth, 2016-12-27 04:10:28]

Description was changed from

==========
Subzero: Fix a build error against LLVM trunk.

LLVM trunk commit a5479197371e169bc676e0e570f2a994329f8773 split
include/llvm/Bitcode/ReaderWriter.h into two separate header files.  This CL
hacks it back, in a sense.

With this change (along with the rest of the recent fixes), Subzero builds
against the latest LLVM trunk - 759dd39154f0bbf1adc87bf613c95f9564f64aa8 at this
writing.

BUG= none
==========

to

==========
Subzero: Fix a build error against LLVM trunk.

LLVM trunk commit a5479197371e169bc676e0e570f2a994329f8773 split
include/llvm/Bitcode/ReaderWriter.h into two separate header files.  This CL
hacks it back, in a sense.

With this change (along with the rest of the recent fixes), Subzero builds
against the latest LLVM trunk - 759dd39154f0bbf1adc87bf613c95f9564f64aa8 at this
writing.

BUG= none
R=kschimpf@google.com

Committed:
https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a...
==========

[Jim Stichnoth, 2016-12-27 04:10:29]

Committed patchset #1 (id:1) manually as
c78be4ec9c4a1d34d0abed50de0de37a87b4accc (presubmit successful).