Log Message:
-----------
Refer to ll_to_earth() function by its actual name.
Modified Files:
--------------
contrib/earthdistance:
README.earthdistance (r1.5 -> r1.6)
(http://developer.postgresql.org/cvsweb.cgi/contrib/earthdistance/README.earthdistance.diff?r1=1.5&r2=1.6)