Changed definition of applicable form data.
Changed definition of applicable form data.

It now not only needs to be found, but also needs to be convertible to
the parameter to be considered applicable for the error message.

1100110/vibe.d,Kozzi11/vibe.d,Geod24/vibe.d,alphaKAI/vibe.d,DBankov/vibe.d,Yoplitein/vibe.d,fast4shoot/vibe.d,yannick/vibe.d,alphaKAI/vibe.d,gedaiu/vibe.d,alphaKAI/vibe.d,etcimon/vibe.d,etcimon/vibe.d,redstar/vibe.d,etcimon/vibe.0,jkm/vibe.d,machindertechnologies/vibe.d,Mihail-K/vibe.d,veelo/vibe.d,sigod/vibe.d,nathanchristenson/vibe.d,mfrischknecht/vibe.d,AndreyMZ/vibe.d,nathanchristenson/vibe.d,Yoplitein/vibe.d,etcimon/vibe.0,jkm/vibe.d,nathanchristenson/vibe.d,sigod/vibe.d,dkillebrew/vibe.d,ColdenCullen/vibe.d,schuetzm/vibe.d,chalucha/vibe.d,rejectedsoftware/vibe.d,sigod/vibe.d,Yoplitein/vibe.d