[PATCH] Add addr2line aliases for symbolizer

[Alexey Samsonov]

First of all, what is your use case?

I have a minor concern about adding these aliases: I'm not sure that merging command line options would work for LLVM tools. So, for instance, you won't be able to write `llvm-symbolizer -Cfi` as you can write `addr2line -Cfi`, so we will not have drop-in replacement anyway.

Also, please update the docs.


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D10221

EMAIL PREFERENCES
  http://reviews.llvm.org/settings/panel/emailpreferences/