[clang] Add PPCallbacks list to preprocessor when building a preacompiled preamble.
Summary:
Revision D38639 needs this commit in order to properly make open
definition calls on include statements work.
Patch by William Enright.
Reviewers: malaperle, krasimir, bkramer, ilya-biryukov
Reviewed By: malaperle, ilya-biryukov
Subscribers: cfe-commits, arphaman, ilya-biryukov
Differential Revision: https://reviews.llvm.org/D39375
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@320804
91177308-0d34-0410-b5e6-
96231b3b80d8