[PATCH] Initial commit for the llvm-dsymutil tool.

[Alexey Samsonov]

>>! In D6242#14, @friss wrote:
> ping!

Sorry about that, will take a look at the revised patch shortly.

> 
> I committed this briefly this morning considering that I could count your silence as approval, but Chandler told me not to do so. Sorry about that, I really didn't mean to force anything through.
> 
> My patch's short but intense in-tree live has produced one bot failure: http://bb.pgr.jp/builders/cmake-llvm-x86_64-linux/builds/19112
> It seems the llvm-dsymutil tool hasn't been built at all there, thus I must be missing something in the build system hooks. I tried cmake and configure builds in Debug/Release before committing,  so I'm not sure what I screwed up.

You should probably add "llvm-dsymutil" to test/lit.cfg, next to all the other llvm-XXX tools listed there.

> Thanks!

http://reviews.llvm.org/D6242