Saving of case sensitive variable names

[Former user]

Originally reported on Google Code with ID 37

See issue 23

If variables "x" and "X" are defined, we don't get both of them saved in
the settings, just one. This is due to QSettings/Windows registry limitation.

Reported by helder.pereira.correia on 2007-05-13 21:55:07

[Former user]

Reported by `helder.pereira.correia` on 2007-05-22 23:51:50 - Labels added: Milestone-0.8

[Former user]

``` Fixed in trunk, will be available in 0.8. Marking as fixed.

Now SpeedCrunch saves upper case variable name letters with the prefix escape '\' and is able to interpret it on loading. SpeedCrunch is now fully variable name case sensitive in and between sessions. ```

Reported by `helder.pereira.correia` on 2007-06-23 23:46:12 - Status changed: `Fixed`