Make moving_platform save with the new XML lib
Make path save with the new XML lib
Make powerups save with the new XML lib
Prepare enemy for new XML lib saving
Make eato save with the new XML lib
Make eato save with the new XML lib
Make furball save with the new XML lib
Fix incorrect <property> generation.

Should be
  <property name="XX" value="YY"/>
instead of
  <property XX="YY"/>
.
Make gee save with the new XML lib
Make krush save with the new XML lib
Make rokko save with the new XML lib
Make spika save with the new XML lib
Make spikeball save with the new XML lib
Make static enemies save with the new XML lib
Make thromp save with the new XML lib
Make turtle save with the new XML lib
Make turtle boss save with the new XML lib
Make particle emitters save with the new XML lib
Make random sound save with the new XML lib
Actually save the level files with libxml++ now.