File size limit is not inclusive

[ShaneZhengNZ]

When I set the file upload size, I set to 200MB (which is in theory 209715200B), but we notice that if I upload a file with 199MB size (209715100B), it fails.

I think there are two problems:

1. The size calculation is not using 1024, but 1000. Not very accurate.
   2: The size limit should be inclusive, i.e. if I set 200MB, I should be able to load 200MB file, but not 201MB (which is 1024_1024_210 = 210763776B).

[danialfarid]

Fixed at 12.0.1