Spaces in arguments

Hello,

there is a bug with arguments containing spaces not correctly passed to the real binary:

```
$ mv Downloads/carnet\ pl\ sout.pdf /media/mmcblk0p1
mv: cannot stat ‘Downloads/carnet’: No such file or directory
mv: cannot stat ‘pl’: No such file or directory
mv: cannot stat ‘sout.pdf’: No such file or directory
```

it can be fixed by changed the last line of pricing.sh to

```
$THISCMD "$@"
```

or better

```
exec $THISCMD "$@"
```