Add to -test=auto-next-linkage maximum number of linkages to display
Add to -test=auto-next-linkage maximum number of linkages to display

This is added to ease LG code development.

It turned out that in order to compare a detailed linkage output between
library versions, for some sentences sometimes more linkages than the
default limit of 1024 are needed.

Example usage: link-parser -limit=10000 -test=auto-next-linkage:5000 < batch
(The :number part is optional.)

linas/link-grammar,opencog/link-grammar,ampli/link-grammar,linas/link-grammar,ampli/link-grammar,opencog/link-grammar,opencog/link-grammar,MadBomber/link-grammar,ampli/link-grammar,ampli/link-grammar,opencog/link-grammar,MadBomber/link-grammar,MadBomber/link-grammar,opencog/link-grammar,opencog/link-grammar,MadBomber/link-grammar,linas/link-grammar,MadBomber/link-grammar,opencog/link-grammar,linas/link-grammar,linas/link-grammar,MadBomber/link-grammar,ampli/link-grammar,ampli/link-grammar,MadBomber/link-grammar,linas/link-grammar,linas/link-grammar,linas/link-grammar,linas/link-grammar,opencog/link-grammar,ampli/link-grammar,MadBomber/link-grammar,ampli/link-grammar,ampli/link-grammar,opencog/link-grammar