package: Replace 'echo -n' by 'printf'

package: Replace 'echo -n' by 'printf'

'echo -n' is not a POSIX construct (no flag support), we shoud use
'printf', especially in init script.

This patch was generated by the following command line:
git grep -l 'echo -n' -- `git ls-files | grep -v 'patch'` | xargs sed -i 's/echo -n/printf/'

Signed-off-by: Maxime Hadjinlian <[email protected]>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <[email protected]>
Signed-off-by: Peter Korsgaard <[email protected]>