Added vcl/settings.hxx to all cxx files which require it.
This helps to speed up compilation after changes to the settings.

Conflicts:
	sc/source/ui/dbgui/pvlaydlg.cxx

Change-Id: I211a0735c47f72d6879f6f15339355abfe0e3cf4
Reviewed-on: https://gerrit.libreoffice.org/7933Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>