The ancient pict_f_vector and pixman_f_vector macros have been a fallout
from long ago transition to pixman and had been removed quite a while ago.
Unfortunately, Intel driver (which is not under our reign) hasn't been
kept up to date yet. So re-adding the compat macro, until Intel driver
team had a chance to keep up.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1778>