Properly encode TopoJSON.sql.in dependency into topology.sql

git-svn-id: http://svn.osgeo.org/postgis/trunk@11185 b70326c6-7e19-0410-871a-916f4a2858ee
Fix AsTopoJSON call in testcase

git-svn-id: http://svn.osgeo.org/postgis/trunk@11186 b70326c6-7e19-0410-871a-916f4a2858ee