BER is all very well, but it turns out that it's better to store the

BER is all very well, but it turns out that it's better to store the
offset as either a byte (if <256), or a 0 byte with a STRLEN before.
"better" in that the reading can be inlined, and even then the object
code is smaller (function calls have space overhead). So goodbye
Perl_sv_read_offset() and hello SvOOK_offset().

p4raw-id: //depot/perl@32838