Use KiB instead of kB for input statistics

This is an arbitrary choice. But KiB are much more common than kB.
Also the notation is unambiguous.

Note that we keep kbps for *bit* rates.

share/lua/intf/rc.lua

@@ -333,9 +333,9 @@ function stats(name,client)
     client:append("+----[ begin of statistical info")
     client:append("+-[Incoming]")
     client:append("| input bytes read : "..string.format("%8.0f KiB",stats_tab["read_bytes"]/1024))
-    client:append("| input bitrate    :   "..string.format("%6.0f kb/s",stats_tab["input_bitrate"]*8000))
+    client:append("| input bitrate    :   "..string.format("%6.0f kB/s",stats_tab["input_bitrate"]*8000))
     client:append("| demux bytes read : "..string.format("%8.0f KiB",stats_tab["demux_read_bytes"]/1024))
-    client:append("| demux bitrate    :   "..string.format("%6.0f kb/s",stats_tab["demux_bitrate"]*8000))
+    client:append("| demux bitrate    :   "..string.format("%6.0f kB/s",stats_tab["demux_bitrate"]*8000))
     client:append("| demux corrupted  :    "..string.format("%5i",stats_tab["demux_corrupted"]))
     client:append("| discontinuities  :    "..string.format("%5i",stats_tab["demux_discontinuity"]))
     client:append("|")