Bug#697567: reveal exactly what special case great_circle_midpoint is

[jidanni at jidanni.org]

Package: perl-doc
Version: 5.14.2-16
Severity: wishlist
File: /usr/share/man/man3/Math::Trig.3perl.gz

Say instead of
       The great_circle_midpoint() is just a special case of

       The great_circle_midpoint() is just a special case ($way=0.5) of

Thanks.