Minor performance tweaks to isprime.m and __isprimelarge__.cc __isprimelarge__.cc: change an if-else ladder to a single equivalent return statement, about 1% faster and less code. isprime.m: periodic check and retune of internal threshold parameter used to select one technique over the other.

%canon_reldir%_EXTRA_DIST =

include %reldir%/code/module.mk
include %reldir%/data/module.mk

%canon_reldir%_EXTRA_DIST += \
  %reldir%/code/COPYING

EXTRA_DIST += $(%canon_reldir%_EXTRA_DIST)