For CUtl* classes: use the index type rather than just ssize_t, this will throw compile warnings for code that constructs a CUtl* object allocating more memory than the index type allows (e.g. allocating UINT16_MAX while the index type has been set to UINT8_MAX).
This ensures that we can never allocate more memory than the maximum value that type could hold, without triggering a compile warning. There was a mention about shorts being slow on PowerPC platforms for utllinkedlist, but the index local type could be overridden (defaults to index storage type). In case it gets used for PowerPC, use 32bit ints as index local types; as the local type gets used for arithmetic operations while storage type is what's getting cached off in memory. This patch had no effect on generated output code, it was mostly implemented to avoid future problems.
