Replace KB unit with KiB (#4293)
kB (*kilo* byte) unit means 1000 bytes, whereas KiB ("kibibyte")
means 1024 bytes. KB was misused: replace kB or KB with KiB when
appropriate.
Same change for MB and GB which become MiB and GiB.
Change the output of Tools/iobench/iobench.py.
Round also the size of the documentation from 5.5 MB to 5 MiB.
diff --git a/Lib/test/libregrtest/cmdline.py b/Lib/test/libregrtest/cmdline.py
index 4999fa7..dab17c3 100644
--- a/Lib/test/libregrtest/cmdline.py
+++ b/Lib/test/libregrtest/cmdline.py
@@ -96,7 +96,7 @@
largefile - It is okay to run some test that may create huge
files. These tests can take a long time and may
- consume >2GB of disk space temporarily.
+ consume >2 GiB of disk space temporarily.
network - It is okay to run tests that use external network
resource, e.g. testing SSL support for sockets.