:named should default to the name of the parameter

[coke]

Originally opened in  http://rt.perl.org/rt3/Ticket/Display.html?id=58886, this code:

.sub main
  $I0 = 'incr'('value'=>3)
  say $I0
.end

.sub 'incr'
  .param int value :named
  inc value
  .return(value)
.end

Should print '4' - the lack of an explicit name for the value param should, per allison, default to the name of the param. (in this case, 'value').

[coke]

Test added to t/compilers/imcc/syn/pcc.t in r42149.

[plobsing]

fixed in r46431