Manman Ren 624a93ee47 Debug Info: revert 178722 for now.
There is a difference for FORM_ref_addr between DWARF 2 and DWARF 3+.
Since Eric is against guarding DWARF 2 ref_addr with DarwinGDBCompat, we are
still in discussion on how to handle this.

The correct solution is to update our header to say version 4 instead of version
2 and update tool chains as well.

rdar://problem/13559431


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178806 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-04 23:13:11 +00:00
..
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