#9360R: fix bad ogr simplification
#9360R: remove ogr_geometry.h
#9360R: mix CPP/C code - experimental
#9360R: enable ogr simplification on provider side only cpp
#9360R: disable ogr simplification while OGR_G_SetPoints does not exist
#9360R: enable ogr simplification for GDAL-OGR >= 1.11
Merge pull request #1087 from ahuarte47/Issue_9360R

Fix bug #9360-revival: fix whole layer not rendered (when simplify geometry activated; followup 3305a6c; fixes #9360)