doce parsing: adding few more headerdoc tags.
// rdar://12379114


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178903 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/AST/CommentCommands.td b/include/clang/AST/CommentCommands.td
index 9587ace..e6ff2a4 100644
--- a/include/clang/AST/CommentCommands.td
+++ b/include/clang/AST/CommentCommands.td
@@ -140,9 +140,11 @@
 def Version    : BlockCommand<"version">;
 def Warning    : BlockCommand<"warning">;
 // HeaderDoc commands
+def Abstract      : BlockCommand<"abstract">;
 def ClassDesign   : RecordLikeDetailCommand<"classdesign">;
 def CoClass       : RecordLikeDetailCommand<"coclass">;
 def Dependency    : RecordLikeDetailCommand<"dependency">;
+def Discussion    : BlockCommand<"discussion">;
 def Helper        : RecordLikeDetailCommand<"helper">;
 def HelperClass   : RecordLikeDetailCommand<"helperclass">;
 def Helps         : RecordLikeDetailCommand<"helps">;
@@ -173,6 +175,9 @@
 defm FBracket : VerbatimBlockCommand<"f[", "f]">; // Displayed LaTeX formula
 defm FBrace   : VerbatimBlockCommand<"f{", "f}">; // LaTeX environment
 
+// HeaderDoc commands
+defm Textblock    : VerbatimBlockCommand<"textblock", "/textblock">;
+
 //===----------------------------------------------------------------------===//
 // VerbatimLineCommand
 //===----------------------------------------------------------------------===//