Log Message:
libcanlock: update to 3.1.0.

From Michael Bäuerle via pkgsrc-wip.

Option "--disable-hp" added (header parsers will stay in package \ 
canlock-hp).

Changelog
=========

3.1.0      2019-01-26
           Merged canlock-hp into libcanlock package (now tracking the version
            number of the libcanlock package)
           Configure option "--disable-hp" added (Default is set to build
            canlock-hp, use this option to get the behaviour from 3.0.x)
           Manual page of canlock-hfp utility updated
           Library API and ABI are unchanged