Correct return type of OffsetSegmentString::size() to be size_t

git-svn-id: http://svn.osgeo.org/geos/trunk@3809 5242fede-7e19-0410-aef8-94bd7d2200fb
Disable copy constructor and assignment operator

git-svn-id: http://svn.osgeo.org/geos/trunk@3810 5242fede-7e19-0410-aef8-94bd7d2200fb
* Disable copy constructor and assignment operator.
* Correct int and std::size_t mismatch for 64-bit target.

git-svn-id: http://svn.osgeo.org/geos/trunk@3811 5242fede-7e19-0410-aef8-94bd7d2200fb
Correct int and std::size_t mismatch for 64-bit target.

git-svn-id: http://svn.osgeo.org/geos/trunk@3812 5242fede-7e19-0410-aef8-94bd7d2200fb
Fix incomplete type of Node at the point of destruction (by GeometryNoder) leading to never called destructor bug.

git-svn-id: http://svn.osgeo.org/geos/trunk@3813 5242fede-7e19-0410-aef8-94bd7d2200fb
Simplify code looking for closer vertex snap

git-svn-id: http://svn.osgeo.org/geos/trunk@3814 5242fede-7e19-0410-aef8-94bd7d2200fb