Get ICU 4.6 to be compiled without RTTI....

third_party/icu/source/i18n/tmunit.cpp

Index: third_party/icu/source/i18n/tmunit.cpp
===================================================================
--- third_party/icu/source/i18n/tmunit.cpp	(revision 74230)
+++ third_party/icu/source/i18n/tmunit.cpp	(working copy)
@@ -5,7 +5,6 @@
  *******************************************************************************
  */
 
-#include <typeinfo>  // for 'typeid' to work
 
 #include "unicode/tmunit.h"
 
@@ -97,7 +96,7 @@
 
 UBool 
 TimeUnit::operator==(const UObject& other) const {
-    return (typeid(*this) == typeid(other)
+    return (CR_TYPEID(*this) == CR_TYPEID(other)
             && fTimeUnitField == ((TimeUnit*)&other)->fTimeUnitField);
 }