Show line count for selection

[ProgerXP]

Currently the status bar has this format:

Ln ... Col ... Sel N

Where N = number of selected bytes.

Update it to form ... Sel M : N where M = number of selected lines (minimum 1).

For rectangular selection, it's currently ... Sel --. If it's not too complex, make it ... Sel M (i.e. omitting N), otherwise leave it at Sel --.

[cshnik]

Fixed.
Please note: View > Long Line Marker affects the Col value format.