Begin using property tables, even though they aren't finished
Moved property allocation/creation out of Lav_createNode.

We have a dedicated function for this, it's not supposed to be public really, and it only adds one line.
Sine node now makes its properties
Fix mismatch between header/source for Lav_createNode
Fixed typo: lav_PROPERTYTYPES has only one R
Other small typo fixes
Sine node now sets retval->num_properties