Add a few more missing includes.

llvm-svn: 105743
diff --git a/lldb/tools/driver/IOChannel.cpp b/lldb/tools/driver/IOChannel.cpp
index d8175cb..8b833b1 100644
--- a/lldb/tools/driver/IOChannel.cpp
+++ b/lldb/tools/driver/IOChannel.cpp
@@ -20,6 +20,9 @@
 #include "lldb/API/SBListener.h"
 #include "lldb/API/SBStringList.h"
 
+#include <string.h>
+#include <limits.h>
+
 using namespace lldb;
 
 typedef std::map<EditLine *, std::string> PromptMap;