- raster.c: Need ceilf(symbol->height * si) to avoid heap-buffer-overflow;

also avoid distributive multiplication with floats to lessen chances of
  platform variation (#204 ARM-Cortex crash)
- raster.c: Don't allow for text if scale < 1.0
- raster.c: Cast some indexes to (size_t) to allow for large scale
- vector.c: Check malloc()s and return ZINT_ERROR_MEMORY on fail
- raster/vector.c: various var name changes & other code fiddling
- library.c: Check that scale/height/whitespace/border are reasonable values:
  scale (0.01-100), height (0-500), whitespace_width/height (0-100),
  border_width (0-100)
- CLI: allow both e.g. '-height' and '--height' (getopt_long_only())
- gif.c: fix GIF_ZLW_PAGE_SIZE -> GIF_LZW_PAGE_SIZE
- GUI: allow whitespace/scale to 100

backend/tests/test_svg.c

@@ -138,6 +138,7 @@ static void test_print(int index, int generate, int debug) {
         int text_length;
 
         if (index != -1 && i != index) continue;
+        if ((debug & ZINT_DEBUG_TEST_PRINT) && !(debug & ZINT_DEBUG_TEST_LESS_NOISY)) printf("i:%d\n", i); // ZINT_DEBUG_TEST_PRINT 16
 
         symbol = ZBarcode_Create();
         assert_nonnull(symbol, "Symbol not created\n");