Newlines in GSettings descriptions are not preserved in .po files

Submitted by Piotr Drąg @piotrdrag

Link to original bug (#793931)

Description

GSettings descriptions with newlines lose those newlines in .po files. Compare https://gitlab.gnome.org/GNOME/mutter/blob/master/data/org.gnome.mutter.wayland.gschema.xml.in#L78 with https://gitlab.gnome.org/GNOME/mutter/blob/master/po/pl.po#L509 . It might be a bug in https://gitlab.gnome.org/GNOME/glib/blob/master/gio/gschema.its or gettext or somewhere else.

Version: 2.54.x