Replace PangoScript by GUnicodeScript
This commit replaces the PangoScript enum by a typedef to GUnicodeScript, and preserves the old enum values as defines.
This depends on adding an enum type for GUnicodeScript in gobject.
This commit replaces the PangoScript enum by a typedef to GUnicodeScript, and preserves the old enum values as defines.
This depends on adding an enum type for GUnicodeScript in gobject.