Added more splat assignment specs.
Added more splat assignment specs.

Adapted specs from https://github.com/rubyspec/rubyspec/pull/278.

sgarciac/spec,ruby/spec,nobu/rubyspec,yous/rubyspec,eregon/rubyspec,ruby/spec,nobu/rubyspec,kachick/rubyspec,eregon/rubyspec,jannishuebl/rubyspec,BanzaiMan/rubyspec,yous/rubyspec,iliabylich/rubyspec,askl56/rubyspec,bl4ckdu5t/rubyspec,benlovell/rubyspec,ruby/spec,askl56/rubyspec,BanzaiMan/rubyspec,kachick/rubyspec,kidaa/rubyspec,kachick/rubyspec,iliabylich/rubyspec,sgarciac/spec,nobu/rubyspec,wied03/rubyspec,wied03/rubyspec,lucaspinto/rubyspec,lucaspinto/rubyspec,ruby/rubyspec,sgarciac/spec,eregon/rubyspec,bl4ckdu5t/rubyspec,benlovell/rubyspec,ruby/rubyspec,wied03/rubyspec,kidaa/rubyspec,jannishuebl/rubyspec