* etc/schema/od-schema-v1.2-os.rnc: Delete.
* etc/schema/OpenDocument-schema-v1.3.rnc:
* etc/schema/OpenDocument-schema-v1.3+libreoffice.rnc:
Copy from Emacs tree.
* etc/schema/schemas.xml: Incorporate changes from Emacs's f1f351def.
This is not a typical port because Org's schemas.xml is a subset of
Emacs's. The changes here follow what's proposed in
<https://orgmode.org/list/87o8d07mpr.fsf@kyleam.com>, with the
addition of copying OpenDocument-schema-v1.3+libreoffice.rnc (which I
overlooked when writing that message).
* etc/schema/od-schema-v1.2-os.rnc: OASIS standard
* etc/schema/od-manifest-schema-v1.2-os.rnc: OASIS standard
* etc/schema/schemas.xml: Fix uri to rnc files.
* lisp/org-odt.el (org-export-odt-schema-dir): Modified to
accommodate change in rnc file names.
* contrib/lisp/org-e-odt.el (org-e-odt-schema-dir): Modified
to accommodate change in rnc file names.
etc/Makefile: add "schema" to $(ETCDIRS)
contrib/odt/etc/schema/od-manifest-schema-v1.2-cs01.rnc: move to etc/schema/od-manifest-schema-v1.2-cs01.rnc
contrib/odt/etc/schema/od-schema-v1.2-cs01.rnc: move to etc/schema/od-schema-v1.2-cs01.rn
contrib/odt/etc/schema/schemas.xml: move to etc/schema/schemas.xml