Object/COFF: Rename getXXX{Begin,End} -> xxx_{begin,end}.

It is mentioned in the LLVM coding standard that _begin() and _end() suffixes
should be used.

llvm-svn: 191569
diff --git a/llvm/tools/llvm-objdump/COFFDump.cpp b/llvm/tools/llvm-objdump/COFFDump.cpp
index ba26ff0..5f0bcbb 100644
--- a/llvm/tools/llvm-objdump/COFFDump.cpp
+++ b/llvm/tools/llvm-objdump/COFFDump.cpp
@@ -232,8 +232,8 @@
 static void printImportTables(const COFFObjectFile *Obj) {
   outs() << "The Import Tables:\n";
   error_code ec;
-  for (import_directory_iterator i = Obj->getImportDirectoryBegin(),
-                                 e = Obj->getImportDirectoryEnd();
+  for (import_directory_iterator i = Obj->import_directory_begin(),
+                                 e = Obj->import_directory_end();
        i != e; i = i.increment(ec)) {
     if (ec)
       return;