because dbaui::TDeleteWrapperFunctor needs it to delete its derived classes

the location of this header file changed with freetype 2.51 so we had to adapt.
On the other hand the header is not actually needed because we load the symbols
for synthetization of outlines dynamically to be compatible with freetype libs
that don't support them. So we can remove the header inclusion.
Found-by: Ariel Costenla-Haile <ariel@apache.org>
Patch-by: Herbert Duerr <hdu@apache.org>

and fix its former usages by utilizing the standard compliant mapped_type
typedef instead

123979: method <SwCursor::IsSelOvr(..)> - treat application of new position due to content frame without height to next/previous content frame as restore to saved position, if new position equals the saved one.

This avoid cursor traveling loops due to hidden content at the beginning/end of the text document.

which were caused by the build system getting the compiler version