Restore geometry verification in unit test

I had removed this at one point during some refactoring.
Default schema is now public (lower case) for postgis
Merge pull request #294 from nicolas-f/enhance_tablelocation

Default schema is now public (lower case) for postgis
Do not use Public as defaut schema
Merge pull request #296 from nicolas-f/enhance_tablelocation

Do not use Public as defaut schema for TableLocation. Use "" instead.
Fix FileEngine, check that columns are not already feed
Merge pull request #298 from nicolas-f/fix/dbf_driver

Fix FileEngine, check that columns are not already fed
Lowercase dbf attributes in PostGIS
Merge pull request #306 from nicolas-f/fix/shp

Lowercase dbf attributes in PostGIS
Merge pull request #293 from agouge/st_sp-restore-test

Restore geometry verification in unit test