- Add new symbologies BARCODE_EAN8, BARCODE_EAN_2ADDON,

`BARCODE_EAN_5ADDON`, `BARCODE_EAN13`, `BARCODE_EAN8_CC` and
  `BARCODE_EAN13_CC` as replacements for `BARCODE_EANX`,
  `BARCODE_EANX_CHK` and `BARCODE_EANX_CC` and use in CLI/GUI
  (`BARCODE_EANX` etc. marked as legacy)
- For EAN/UPC accept space as alternative add-on separator to '+',
  and accept GTIN-13 format with & without 2-digit or 5-digit
  add-on (no separator)
- Buffer length of member `errtxt` in `zint_symbol` extended 100
  -> 160 (will be sufficient for eventual translation and
  gs1-syntax-dictionary errors hopefully)
- UPC-E: warn if first digit of 7 (or 8 if check digit given) not
  '0' or '1'
- manual: update for new EAN symbologies and mention EANX now
  legacy but still supported

docs/Makefile

@@ -65,9 +65,13 @@ IMAGES = \
 	images/upca.svg \
 	images/upca_5.svg \
 	images/upce.svg \
-	images/eanx13.svg \
-	images/eanx5.svg \
-	images/eanx8_5.svg \
+	images/ean13.svg \
+	images/ean13_2.svg \
+	images/ean13_gd_gws.svg \
+	images/ean8.svg \
+	images/ean8_gws.svg \
+	images/ean_2addon.svg \
+	images/ean_5addon_gws.svg \
 	images/isbnx.svg \
 	images/plessey.svg \
 	images/msi_plessey.svg \
@@ -109,8 +113,8 @@ IMAGES = \
 	images/dbar_omnstk.svg \
 	images/dbar_expstk.svg \
 	images/code49.svg \
-	images/eanx_cc_a.svg \
-	images/eanx_cc_b.svg \
+	images/ean13_cc_a.svg \
+	images/ean13_cc_b.svg \
 	images/gs1_128_cc_c.svg \
 	images/pharma_two.svg \
 	images/postnet.svg \