FIX:core: routegraph map - copy paste error cousing endless loop from popup

FIX:core: routegraph map - copy paste error cousing endless loop from popup
FIX:core: work with projections different than mg
FIX:core: rename item_coord_is_segment to is_node, since a single
coordinate can not form a segment, it's just a node
FIX:garmin: report correctly segments so coordinates routing is working,
may be need to add align in some places and fix drawing of segments
in some cases.

git-svn-id: https://navit.svn.sourceforge.net/svnroot/navit/trunk@1524 ffa7fe5e-494d-0410-b361-a75ebd5db220