Borland Implib Version 3.0.22 Copyright (c) 1991, 2000 Inprise Corporation
and MSVC-generated DLLs with exported functions using _cdecl calling convention
... sometimes or with some verisons of some DLLs, implib won't add the
underscore prefix to the exported function name which caused the build error:
Error: Unresolved external '_total_users' ...

Using coff2omf instead to convert the MSVC-generated import library (sbbs.lib)
to the Borland/OMF flavor works, however. I'd seen this issue before but it
went away when the number of symbols in the source DLL changes. Newer versions
of implib appear to *not* have this issue so when we upgrade to a newer
C++Builder, this work-around will no longer be necessary.