Revert "Fix broken tests due to new error output."

This reverts commit ec7c94f8e6860968d384b578e5564a9c55c80b4a and
re-enables OptionValidators.

llvm-svn: 212627
diff --git a/lldb/source/Interpreter/CommandOptionValidators.cpp b/lldb/source/Interpreter/CommandOptionValidators.cpp
new file mode 100644
index 0000000..7d66de5
--- /dev/null
+++ b/lldb/source/Interpreter/CommandOptionValidators.cpp
@@ -0,0 +1,39 @@
+//===-- CommandOptionValidators.cpp -----------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Interpreter/CommandOptionValidators.h"
+
+#include "lldb/Interpreter/CommandInterpreter.h"
+#include "lldb/Target/Platform.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+bool PosixPlatformCommandOptionValidator::IsValid(Platform &platform, const ExecutionContext &target) const
+{
+    llvm::Triple::OSType os = platform.GetSystemArchitecture().GetTriple().getOS();
+    switch (os)
+    {
+    // Are there any other platforms that are not POSIX-compatible?
+    case llvm::Triple::Win32:
+        return false;
+    default:
+        return true;
+    }
+}
+
+const char* PosixPlatformCommandOptionValidator::ShortConditionString() const 
+{ 
+    return "POSIX"; 
+}
+
+const char* PosixPlatformCommandOptionValidator::LongConditionString() const 
+{ 
+    return "Option only valid for POSIX-compliant hosts."; 
+}