The rx_stats variable has always been globally available to processes which 
link with RX, and the structure definition is visible in rx.h. It is also 
exported by our shared libraries. However, as part of work on improving the 
performance of the RX layer, I'd like to move the statistics to using atomic 
counters. In order to catch bad usage of these, I'd like to change the 
underlying types to atomic counter types. This means that the internal 
representation will no long be in the form of struct rx_statistics, and that we 
need to hide rx_stats from processes which link with RX. My intention is to 
provide two new functions:

struct rx_statistics *rx_GetStatistics();
void rx_FreeStatistics(struct rx_statistics **);

which can be used to access the traditional rx_statistics structure 
(GetStatistics will map a new internal representation into the external 
interface)

As this is an API change, I thought I should present it here first.

Does anyone have any objections to this change?

Cheers,

Simon.

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