rename the dwarf class to DwarfPrinter.  This matches the filename
and much more accurately describes what it is all about.

llvm-svn: 94233
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 7717922..cd4b66f 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -275,7 +275,7 @@
 } // end llvm namespace
 
 DwarfDebug::DwarfDebug(raw_ostream &OS, AsmPrinter *A, const MCAsmInfo *T)
-  : Dwarf(OS, A, T, "dbg"), ModuleCU(0),
+  : DwarfPrinter(OS, A, T, "dbg"), ModuleCU(0),
     AbbreviationsSet(InitAbbreviationsSetSize), Abbreviations(),
     DIEValues(), StringPool(),
     SectionSourceLines(), didInitial(false), shouldEmit(false),