K 10
svn:author
V 6
marino
K 8
svn:date
V 27
2015-11-11T10:24:01.281083Z
K 7
svn:log
V 241
lang/io: uses optios framework, fix couple of bugs

During the conversion to use option handlers, I found a couple of
typos and obsolete code which caused errors.  I also switched to
USES+= readline libedit when their options were selected.

END