[PDB/CodeView] Read/write codeview inlinee line information.

Previously we wrote line information and file checksum
information, but we did not write information about inlinee
lines and functions.  This patch adds support for that.

llvm-svn: 301936

llvm/lib/DebugInfo/CodeView/ModuleDebugFragmentRecord.cpp

@@ -34,6 +34,7 @@ Error ModuleDebugFragmentRecord::initialize(BinaryStreamRef Stream,
   switch (Kind) {
   case ModuleDebugFragmentKind::FileChecksums:
   case ModuleDebugFragmentKind::Lines:
+  case ModuleDebugFragmentKind::InlineeLines:
     break;
   default:
     llvm_unreachable("Unexpected debug fragment kind!");