ZPAQ TODO: Get show_progress to work on compression

[pete4abw]

In libzpaq.cpp: Compressor::compress(int n)

/* TODO
 * Need to show progress
      // ver 7.15 uses read instead of get
      // need to show progresss in this way
      if (!(i % 128))
              show_progress(i);
*/

show_progress is defined in libzpaq.h in the lrzip block at the end.