[dsymutil] Rename llvm-dsymutil -> dsymutil

Now that almost all functionality of Apple's dsymutil has been
upstreamed, the open source variant can be used as a drop in
replacement. Hence we feel it's no longer necessary to have the llvm
prefix.

Differential revision: https://reviews.llvm.org/D44527

llvm-svn: 327790
diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 6455b634..f08bd92 100644
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -214,7 +214,7 @@
 }
 
 // Do not use the cached DataLayout because some client use it without a Module
-// (llvm-dsymutil, llvm-dwarfdump).
+// (dsymutil, llvm-dwarfdump).
 unsigned AsmPrinter::getPointerSize() const {
   return TM.getPointerSize(0); // FIXME: Default address space
 }