- PDF417/MICROPDF417: use latch not ps shift for padding when

spanning Text segments to avoid affecting 1st char of 2nd segment
- PDF417/MICROPDF417: add optimized encoding, FAST_MODE for
  previous scheme; formatting changes
- common.c/h: add `cnt_digits()`, comments in include and make more
  consistent, minor code fiddling
- DOTCODE: replace `dc_n_digits()` with new `cnt_digits()`
- test_qr: fix `test_qr_perf()`
- composite: minor code fiddling
- library: debug dump HIBC-processed input
- BWIPP: update to latest

backend/library.c

@@ -336,6 +336,8 @@ static int hibc(struct zint_symbol *symbol, struct zint_seg segs[], const int se
     segs[0].source = (unsigned char *) to_process;
     segs[0].length = length;
 
+    if (symbol->debug & ZINT_DEBUG_PRINT) printf("HIBC processed source: %s\n", to_process);
+
     switch (symbol->symbology) {
         case BARCODE_HIBC_128:
             error_number = code128(symbol, segs[0].source, segs[0].length);