This is a stripped down version of "The Simplebuffer System" library
by RhoSigma. The documentation and examples are part of the author's
"Libraries Collection" and can be found for download at the respective
forum thread here:
    https://qb64phoenix.com/forum/forumdisplay.php?fid=23

Note: This version features reduced functionality to make it faster for the
      high number of buffers some QB64-PE programs can end up with.

Note: The sb_qb64_extension.bi/.bm files are not part of the buffer system.
      These files provide glue code for use of the buffers inside qb64pe.
