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

third_party/icu/source/i18n/udat.cpp

Index: third_party/icu/source/i18n/udat.cpp
===================================================================
--- third_party/icu/source/i18n/udat.cpp	(revision 74230)
+++ third_party/icu/source/i18n/udat.cpp	(working copy)
@@ -33,7 +33,7 @@
  */
 static void verifyIsSimpleDateFormat(const UDateFormat* fmt, UErrorCode *status) {
    if(U_SUCCESS(*status) &&
-       dynamic_cast<const SimpleDateFormat*>(reinterpret_cast<const DateFormat*>(fmt))==NULL) {
+       CR_DYNAMIC_CAST<const SimpleDateFormat*>(reinterpret_cast<const DateFormat*>(fmt))==NULL) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
    }
 }
@@ -338,14 +338,14 @@
     }
 
     const DateFormat *df=reinterpret_cast<const DateFormat *>(fmt);
-    const SimpleDateFormat *sdtfmt=dynamic_cast<const SimpleDateFormat *>(df);
+    const SimpleDateFormat *sdtfmt=CR_DYNAMIC_CAST<const SimpleDateFormat *>(df);
     const RelativeDateFormat *reldtfmt;
     if (sdtfmt!=NULL) {
         if(localized)
             sdtfmt->toLocalizedPattern(res, *status);
         else
             sdtfmt->toPattern(res);
-    } else if (!localized && (reldtfmt=dynamic_cast<const RelativeDateFormat *>(df))!=NULL) {
+    } else if (!localized && (reldtfmt=CR_DYNAMIC_CAST<const RelativeDateFormat *>(df))!=NULL) {
         reldtfmt->toPattern(res, *status);
     } else {
         *status = U_ILLEGAL_ARGUMENT_ERROR;
@@ -900,7 +900,7 @@
  */
 static void verifyIsRelativeDateFormat(const UDateFormat* fmt, UErrorCode *status) {
    if(U_SUCCESS(*status) &&
-       dynamic_cast<const RelativeDateFormat*>(reinterpret_cast<const DateFormat*>(fmt))==NULL) {
+       CR_DYNAMIC_CAST<const RelativeDateFormat*>(reinterpret_cast<const DateFormat*>(fmt))==NULL) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
    }
 }