io-2.4.9 released

[Philip Nienhuis]

A new release (2.4.9) of the octave-forge io package has just been 
uploaded [1]. It's a mere bug fix release that a.o., should allow io to 
be also compatible with the current development branch of core Octave. 
See the NEWS for the changes [2].

Just after Olaf made the release I pushed a cset for csv2cell() 
implementing some changes mentioned here:
  http://lists.gnu.org/archive/html/help-octave/2018-01/msg00026.html
However that part of the code has seen just half an hour of testing so 
it had better wait for a future 2.4.10 release anyway. Additional 
testing "in the field" is very welcome... [3]

Enjoy,
Philip

[1] https://octave.sourceforge.io/download.php?package=io-2.4.9.tar.gz
[2] https://octave.sourceforge.io/io/NEWS.html

[3] http://hg.code.sf.net/p/octave/io/file/5c728076342d/src/csv2cell.cc
When "mkoctfiling" it separately note that the two OV_ISNUMERIC macros 
in L.252-253 should be changed into "is_numeric_type" for Octave-4.2.x 
and "isnumeric" for 4.3.0+