Update $libver after upgrade

git-svn-id: http://svn.osgeo.org/postgis/trunk@12339 b70326c6-7e19-0410-871a-916f4a2858ee
#2634, should fix geography-tree-distance errors in cases
where polygons interact with collections.


git-svn-id: http://svn.osgeo.org/postgis/trunk@12340 b70326c6-7e19-0410-871a-916f4a2858ee