[Bug-wget] Some suggestions, logging and --report-speed="bits"

[NP]

Hello

1) I use wget to measure download speed. An option 
--report-speed="bits" is nice but it would be even nicer to have 
options like:
--report-speed="kbits"
--report-speed="Mbits"

2)) Writing data to log file is messy. I simultaneosly write output to
screen and log file. The 50K steps flood the screen and log file. 
There is also no real time download speed available. For me it would 
be better to print progress MB and % and download speed every second 
or so. Maybe --report-interval.

--2016-11-11 16:37:49--  http://speedtest.tele2.net/10MB.zip
Resolving speedtest.tele2.net (speedtest.tele2.net)... 90.130.70.73
Connecting to speedtest.tele2.net 
(speedtest.tele2.net)|90.130.70.73|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10485760 (10M) [application/zip]
Saving to: 'nul'

     0K .......... .......... .......... .......... ..........  0% 
1.16M 9s
    50K .......... .......... .......... .......... ..........  0% 
1.09M 9s
   100K .......... .......... .......... .......... ..........  1% 
1.95M 8s
   150K .......... .......... .......... .......... ..........  1% 
1.15M 8s
   200K .......... .......... .......... .......... ..........  2% 
1.24M 8s
   250K .......... .......... .......... .......... ..........  2% 
1.09M 8s
   300K .......... .......... .......... .......... ..........  3% 
1.83M 7s
   350K .......... .......... .......... .......... ..........  3% 
2.62M 7s
   400K .......... .......... .......... .......... ..........  4% 
2.69M 7s
   450K .......... .......... .......... .......... ..........  4% 
2.69M 6s
   500K .......... .......... .......... .......... ..........  5% 
2.38M 6s
   550K .......... .......... .......... .......... ..........  5% 
2.38M 6s
   600K .......... .......... .......... .......... ..........  6% 
2.93M 6s
   650K .......... .......... .......... .......... ..........  6% 
6.49M 5s
   700K .......... .......... .......... .......... ..........  7% 
2.70M 5s


BR NP