Fix for Octave (need to add extension of the m script).
Cosmetic change (use isdates routine).
Bug fix. Input must be numeric in the first place.
Bug fix (wrong handle).
Added new routine to test if a global variable exist in the base workspace.
Fixed bug in unitary test (due to a change of behaviour introduced last week by Houtan).
Fixed bug (isscalar does not assume that the input is numeric).
Adapted unitary test for octave.
Adapted unitary tests for octave.
Fixed bug (problem with dates selection in @dseries::subsref).
Cosmetic (removed commented line of code).