Try new method #ref(pagename/filename)

Try new method #ref(pagename/filename)
instead of #ref(filename,pagename).

A method of passing a page name through the second
argument, can not pass, that equals to ref's
option name, to avoid trivial troubles about
#ref(filename,right,right) etc.

HACK: This patch also effects #ref(filename,_size)
or someting inner params, started with '_', and
shows you TRUE error with #ref(filename,_error)