replaced use of PTR_CAST, IS_TYPE, ISA in
    chart2, connectivity, editeng, extensions, filter, forms, framework, idl

Change-Id: I6a2f9d8bbccb07088413f7552af4b5af8f0cad99
Reviewed-on: https://gerrit.libreoffice.org/18920Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Oliver Specht <oliver.specht@cib.de>