[571712] Uses compile info classdef in export

If a non whitespace classdef is provided, then this value is used as the
base class of the exported FB instead of the default base class
according to its type.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=571712

Change-Id: Ie5865e501c9b8c56fd9922028d838892daba9e26
Signed-off-by: Martin Melik Merkumians <melik-merkumians@acin.tuwien.ac.at>
29 files changed