Changeset 237d02c for perl/modules/IRC

Remove default_{attrs,fgcolor,bgcolor} from owl_fmtext

They didn't quite behave when appending two owl_fmtexts together; what
does it mean to append a string whose default color is red to one whose
default color is blue? (And then you set the default to green
afterwards...)

Now owl_fmtext is merely a unicode string with formatting characters.
Default attributes are instead a property of how you view the string and
are passed to owl_fmtext_curs_waddstr. Which unfortunately means it has
a lot of arguments. :-/