This patch enables llvm-bcanalyzer to print the bitcode wrapper header
if the file has one, which is needed to test the changes made in
r258627 (bitcode-wrapper-header-armv7m.ll is the test case for r258627).
Differential Revision: http://reviews.llvm.org/D16642
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259162 91177308-0d34-0410-b5e6-96231b3b80d8