#1652 Fine Registration correction to handle the warping option

This simple correction can solve the initial issue : the warping filter is plugged onto the main filter.

When solving this issue, we also add test to check consistency between parameters 'w' and 'wo' :

• both are needed to produce the warped image (wo) from an image (w)
• if only w is set, we display a warning
• if only wo is set, we display a fatal message : in this specific case, OTB tries to test the OutputImageParameter 'wo'. Since it cannot be produced, it causes a seg fault.

Note : this branch also contains some modification made on otbWrapperOutputImageParameter.