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

third_party/icu/source/i18n/dtitvfmt.cpp

Index: third_party/icu/source/i18n/dtitvfmt.cpp
===================================================================
--- third_party/icu/source/i18n/dtitvfmt.cpp	(revision 74230)
+++ third_party/icu/source/i18n/dtitvfmt.cpp	(working copy)
@@ -8,7 +8,6 @@
 *******************************************************************************
 */
 
-#include <typeinfo>  // for 'typeid' to work
 
 #include "unicode/dtitvfmt.h"
 
@@ -190,7 +189,7 @@
 
 UBool
 DateIntervalFormat::operator==(const Format& other) const {
-    if (typeid(*this) == typeid(other)) {
+    if (CR_TYPEID(*this) == CR_TYPEID(other)) {
         const DateIntervalFormat* fmt = (DateIntervalFormat*)&other;
 #ifdef DTITVFMT_DEBUG
     UBool equal;
@@ -243,7 +242,7 @@
 
     if ( obj.getType() == Formattable::kObject ) {
         const UObject* formatObj = obj.getObject();
-        const DateInterval* interval = dynamic_cast<const DateInterval*>(formatObj);
+        const DateInterval* interval = CR_DYNAMIC_CAST<const DateInterval*>(formatObj);
         if (interval != NULL){
             return format(interval, appendTo, fieldPosition, status);
         }