Add OptionGroupWatchpoint.cpp/.h (preparatory work) for hooking up watchpoint to the 'frame variable' comand.
To watch a variable for read/write, issue:

    frame variable -w read_write

Note that '-w' option is not working yet. :-)


git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@139434 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Interpreter/CommandObject.cpp b/source/Interpreter/CommandObject.cpp
index b1eafd5..c3547e2 100644
--- a/source/Interpreter/CommandObject.cpp
+++ b/source/Interpreter/CommandObject.cpp
@@ -829,7 +829,8 @@
     { eArgTypeValue, "value", CommandCompletions::eNoCompletion, { NULL, false }, "A value could be anything, depending on where and how it is used." },
     { eArgTypeWidth, "width", CommandCompletions::eNoCompletion, { NULL, false }, "Help text goes here." },
     { eArgTypeNone, "none", CommandCompletions::eNoCompletion, { NULL, false }, "No help available for this." },
-    { eArgTypePlatform, "platform-name", CommandCompletions::ePlatformPluginCompletion, { NULL, false }, "The name of an installed platform plug-in . Type 'platform list' to see a complete list of installed platforms." }
+    { eArgTypePlatform, "platform-name", CommandCompletions::ePlatformPluginCompletion, { NULL, false }, "The name of an installed platform plug-in . Type 'platform list' to see a complete list of installed platforms." },
+    { eArgTypeWatchMode, "watch-mode", CommandCompletions::eNoCompletion, { NULL, false }, "Specify the mode for a watchpoint." }
 };
 
 const CommandObject::ArgumentTableEntry*