Create consistent Layer creation options for geometry column name, spatial index and FID

[jpalmer]

Various OGR vector drivers provide the option to define the name of the geometry field/column when creating a layer. When scripting for multiple output formats at runtime this is an annoyance.

GDAL should have one consistent layer creation option for this option across all drivers. It should also be possible to retain the older LCO values for compatibility reasons, but not advertise them in the documentation any more. Could be a good idea to address this before GDAL 2.0 is released :)

Below is a list of the different LCO for each driver:

Driver	Layer creation option
MSSQLSpatial	GEOM_NAME
PostgreSQL	GEOMETRY_NAME
GPKG	GEOMETRY_COLUMN
FileGDB	GEOMETRY_NAME
MySQL	GEOMETRY_NAME
SQLite	- none - (GEOMETRY / WKT_GEOMETRY hardcoded)
OCI	GEOMETRY_NAME

==> Use GEOMETRY_NAME

Similar situation with FID column name:

Driver	Layer creation option
MSSQLSpatial	-none - (ogr_fid hardcoded)
PostgreSQL	FID
GPKG	FID
FileGDB	OID_NAME
MySQL	MYSQL_FID
SQLite	- none - (OGC_FID hardcoded) -->TODO
OCI	- none, but use OCI_FID configuration option that default to OGR_FID

==> Use FID

And a few minor issues with spatial index with the OCI driver using INDEX and the documentation being inconsistent across the drivers:

Driver	Layer creation option	Documented
MSSQLSpatial	SPATIAL_INDEX	Not documented
PostgreSQL	SPATIAL_INDEX	OFF/ON
GPKG	SPATIAL_INDEX	YES, NO
MySQL	SPATIAL_INDEX	YES, NO
SQLite	SPATIAL_INDEX	yes/no
OCI	INDEX	OFF