added mangling for gcc4, deskbar replicants are now loaded correctly

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18975 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/support/Archivable.cpp

@@ -129,7 +129,12 @@ BuildFuncName(const char* className, BString& funcName)
 	//	This is what we're after:
 	//		Instantiate__Q28OpenBeOS11BArchivableP8BMessage
 	Mangle(className, funcName);
+#if __GNUC__ >= 4
+	funcName.Prepend("_ZN");
+	funcName.Append("11InstantiateE");
+#else
 	funcName.Prepend("Instantiate__");
+#endif
 	funcName.Append("P8BMessage");
 }