drop-config-h

drop-config-h

Unlike upstream, we do not install config.h since applications
built with OpenCascade may want to ship their own config.h file.
Installed headers must then not #include <config.h>

Unfortunately the situation became worse in 6.5.0, upstream relies
on config.h being included by all files; we have to include
config.h in recently added C++ files.

Gbp-Pq: Name drop-config-h.patch