[arch-dev-public] [signoff] less-436-1

Upstream update These are the differences between version 429 and version 436: * Don't pass "-" to non-pipe LESSOPEN unless it starts with "-". * Allow a fraction as the argument to the -# (--shift) option. * Fix highlight bug when underlined/overstruck text matches at end of line. * Fix non-regex searches with ctrl-R. Signoff both. Allan