Restore RELAX NG schemas to 'dita-ot.jar'
Restore RELAX NG schemas to 'dita-ot.jar'

Without these schemas in the .jar file, builds with project files fail with the following error:

> Error: invalid input for CompactParseable

- Amends 09c1d94 from #3645

Signed-off-by: Roger Sheen <a61a1add71dadc74037ae5e44ee30713db9a7451@infotexture.net>

dita-ot/dita-ot,dita-ot/dita-ot,infotexture/dita-ot,infotexture/dita-ot,infotexture/dita-ot,shaneataylor/dita-ot,shaneataylor/dita-ot,shaneataylor/dita-ot,dita-ot/dita-ot,dita-ot/dita-ot,drmacro/dita-ot,shaneataylor/dita-ot,infotexture/dita-ot,drmacro/dita-ot,infotexture/dita-ot,drmacro/dita-ot,shaneataylor/dita-ot,dita-ot/dita-ot,drmacro/dita-ot,drmacro/dita-ot