scanner: Preserve paragraph breaks in input XML
scanner: Preserve paragraph breaks in input XML

If we have a blank line in the incoming XML documentation, keep that in
the emitted doxygen comments.

mchalupa/wayland,tulcod/wayland,mchalupa/wayland,abooij/wayland,sir-murray/wayland,sir-murray/wayland,bitfactor/wayland,eyolfson/wayland,tulcod/wayland,sir-murray/wayland,eyolfson/wayland,abooij/wayland,bitfactor/wayland,eyolfson/wayland,bitfactor/wayland,tulcod/wayland,abooij/wayland,mchalupa/wayland