Support out parameters in signals
Submitted by joh..@..at.com
Link to original bug (#644927)
Description
We need to support out parameters in signals similarly to how they are handled in vfuncs. A signal that is hooked up via a vfunc works correctly but using connect, it will try and send the out variables in like it does in C. The example in bug #644926 shows the issue with the to-embedder and from-embedder signals.