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

third_party/icu/source/i18n/reldtfmt.cpp

Index: third_party/icu/source/i18n/reldtfmt.cpp
===================================================================
--- third_party/icu/source/i18n/reldtfmt.cpp	(revision 74230)
+++ third_party/icu/source/i18n/reldtfmt.cpp	(working copy)
@@ -288,7 +288,7 @@
     if (!U_FAILURE(status)) {
         result.remove();
         if ( fDateFormat ) {
-            SimpleDateFormat* sdtfmt = dynamic_cast<SimpleDateFormat*>(fDateFormat);
+            SimpleDateFormat* sdtfmt = CR_DYNAMIC_CAST<SimpleDateFormat*>(fDateFormat);
             if (sdtfmt != NULL) {
                 sdtfmt->toPattern(result);
             } else {
@@ -305,7 +305,7 @@
     if (!U_FAILURE(status)) {
         result.remove();
         if ( fTimeFormat ) {
-            SimpleDateFormat* sdtfmt = dynamic_cast<SimpleDateFormat*>(fTimeFormat);
+            SimpleDateFormat* sdtfmt = CR_DYNAMIC_CAST<SimpleDateFormat*>(fTimeFormat);
             if (sdtfmt != NULL) {
                 sdtfmt->toPattern(result);
             } else {
@@ -322,11 +322,11 @@
     if (!U_FAILURE(status)) {
         SimpleDateFormat* sdtfmt = NULL;
         SimpleDateFormat* stmfmt = NULL;
-        if (fDateFormat && (sdtfmt = dynamic_cast<SimpleDateFormat*>(fDateFormat)) == NULL) {
+        if (fDateFormat && (sdtfmt = CR_DYNAMIC_CAST<SimpleDateFormat*>(fDateFormat)) == NULL) {
             status = U_UNSUPPORTED_ERROR;
             return;
         }
-        if (fTimeFormat && (stmfmt = dynamic_cast<SimpleDateFormat*>(fTimeFormat)) == NULL) {
+        if (fTimeFormat && (stmfmt = CR_DYNAMIC_CAST<SimpleDateFormat*>(fTimeFormat)) == NULL) {
             status = U_UNSUPPORTED_ERROR;
             return;
         }