Add default implementations of equals and hashC...
Add default implementations of equals and hashC...

Add default implementations of equals and hashCode to Ordered, along
with an explanation that end users should override them if they plan on
using them.


shimib/scala,felixmulder/scala,jvican/scala,jvican/scala,martijnhoekstra/scala,lrytz/scala,lrytz/scala,slothspot/scala,slothspot/scala,felixmulder/scala,jvican/scala,martijnhoekstra/scala,martijnhoekstra/scala,jvican/scala,scala/scala,felixmulder/scala,lrytz/scala,jvican/scala,scala/scala,lrytz/scala,scala/scala,lrytz/scala,slothspot/scala,slothspot/scala,scala/scala,shimib/scala,slothspot/scala,shimib/scala,scala/scala,lrytz/scala,shimib/scala,jvican/scala,felixmulder/scala,jvican/scala,felixmulder/scala,felixmulder/scala,scala/scala,martijnhoekstra/scala,slothspot/scala,shimib/scala,slothspot/scala,martijnhoekstra/scala,felixmulder/scala,martijnhoekstra/scala,shimib/scala