Fixed various FDO issues: geometries leaking, invalid casts

[romicadascalescu]

Fixed various FDO issues:

• geometries leaking
• invalid casts
• close resource handlers
• fixed some copy/paste issues, e.g. EXCEPTION_HANDLER(exist = (!!(value == nullptr ? nullptr : value->GetImpObj())))

replaced with

EXCEPTION_HANDLER(exist = (!GetImpObj()->Contains(value == nullptr ? nullptr : value->GetImpObj())))

[romicadascalescu]

Changed Files:

• Fixed default value vs. NULL

Fdo\Unmanaged\Src\Fdo\Schema\DataPropertyDefinition.cpp

• fixed copy-paste issues and cast issues

Fdo\Managed\Src\OSGeo\Common\Xml\mgXmlReader.cpp
Providers\GenericRdbms\Managed\Src\OSGeo\FDO\Providers\Rdbms\Override\MySQL\mgOvDataPropertyDefinitionCollection.cpp
Providers\GenericRdbms\Managed\Src\OSGeo\FDO\Providers\Rdbms\Override\MySQL\mgOvObjectPropertyDefinition.cpp
Providers\GenericRdbms\Managed\Src\OSGeo\FDO\Providers\Rdbms\Override\MySQL\mgOvPropertyDefinitionCollection.cpp
Providers\GenericRdbms\Managed\Src\OSGeo\FDO\Providers\Rdbms\Override\MySQL\mgOvObjectPropertyDefinition.h
Providers\GenericRdbms\Managed\Src\OSGeo\FDO\Providers\Rdbms\Override\ODBC\mgOvPropertyDefinitionCollection.cpp \Providers\GenericRdbms\Managed\Src\OSGeo\FDO\Providers\Rdbms\Override\SQLServerSpatial\mgOvObjectPropertyDefinition.cpp \Providers\GenericRdbms\Managed\Src\OSGeo\FDO\Providers\Rdbms\Override\SQLServerSpatial\mgOvPropertyDefinitionCollection.cpp

• fixed free loaded library for messages

Fdo\Unmanaged\Src\Common\Exception.cpp
Fdo\Unmanaged\Src\Nls\msg_get.c
Fdo\Unmanaged\Src\Nls\Inc\nls.h

• Fixed FDO leaks geometries and byte arrays

Fdo\Unmanaged\Src\Common\ArrayHelper.cpp
Fdo\Unmanaged\Src\Geometry\Fgf\GeometryThreadData.cpp