Reflow some documentation and remove whitespace comments. Move
DebugInfoOffset data member up with the rest of the data members.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195298 91177308-0d34-0410-b5e6-96231b3b80d8
Move DebugInfoOffset member near the other data member it helps describe.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195299 91177308-0d34-0410-b5e6-96231b3b80d8