XLByte* usage

Hi,

Now that XLRecPtr's are plain 64bit integers what are we supposed to use
in code comparing and manipulating them? There already is plenty example
of both, but I would like new code to go into one direction not two...

I personally find direct comparisons/manipulations far easier to read
than the XLByte* equivalents.

Greetings,

Andres Freund

-- 
 Andres Freund	                   http://www.2ndQuadrant.com/
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