fget: Reduce output to a bare minimum

Signed-off-by: Thomas Egerer <hakke[underscore]double-oh-seven[at]gmx.de>
ea: Improve name sanitation

Quote special shell characters (until one comes along that slipped
through...).

Signed-off-by: Thomas Egerer <hakke[underscore]double-oh-seven[at]gmx.de>
fget: Use double quotes for command...

and quote output file name accordingly.

Signed-off-by: Thomas Egerer <hakke[underscore]double-oh-seven[at]gmx.de>