bin/55857: ftp -q does not work

[Thomas Klausner <wiz%NetBSD.org@localhost>]

>Number:         55857
>Category:       bin
>Synopsis:       ftp -q does not work
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Dec 11 10:45:00 +0000 2020
>Originator:     Thomas Klausner
>Release:        NetBSD 9.99.77
>Organization:
>Environment:
	
	
Architecture: x86_64
Machine: amd64
>Description:
ftp -q does not work.
The progressbar code also uses the SIGALRM handler but with SA_RESTART.

This needs to be changed to fix ftp -q; the code needs to handle EINTR.

The change to progressbar.c might also affect other code that also
includes this code fragment.
>How-To-Repeat:
ftp -q 60 some-ruby-server
and see that 30kB might take weeks and not finish.
>Fix:
Not provided.

>Unformatted: