Make the two Y/n questions that firstlogin asks behave consistently
with each other, and more in line with user expectation:
- Reject anything that is not Y, y, N, n or <enter>. Previously the
"Connect via wireless? [Y/n]" question would interpret Y, y and
<enter> as "yes", and everything else as "no", whereas the
"Set user language based on your location? [Y/n]" question would
loop until the user selected Y, y, N or n.
- Make pressing enter equivalent to the default "Y", since that
is the capitalized option.
- Echo back what the user typed.
e52958db93