Introduce -brief command line option to llvm-dwarfdump

This patch introduces a new command line option, called brief, to
llvm-dwarfdump.  When -brief is used, the attribute forms for the
.debug_info section will not be emitted to output.

Patch by Spyridoula Gravani!

rdar://problem/21474365
Differential Revision: https://reviews.llvm.org/D33867

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304844 91177308-0d34-0410-b5e6-96231b3b80d8
9 files changed