- 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/zint.1

@@ -293,8 +293,9 @@ postcode, 3\-digit ISO 3166\-1 country code, 3\-digit service code):
 6   Reader Initialisation (Programming)
 .EE
 .PP
-For GS1 Composite symbols (names end in \f[CR]_CC\f[R], i.e.\ EANX_CC,
-GS1_128_CC, DBAR_OMN_CC etc.):
+For GS1 Composite symbols (names end in \f[CR]_CC\f[R],
+i.e.\ \f[CR]EAN8_CC\f[R], \f[CR]EAN13_CC\f[R], \f[CR]GS1_128_CC\f[R],
+\f[CR]DBAR_OMN_CC\f[R] etc.):
 .IP
 .EX
 1   CC\-A
@@ -704,7 +705,7 @@ a series of EAN\-13 barcodes, formatting the output filenames to
 using the special character \[lq]\[ti]\[rq].
 .IP
 .EX
-zint \-b EANX \-\-batch \-i \[aq]ean13nos.txt\[aq] \-o \[aq]ean\[ti]\[ti]\[ti].gif\[aq]
+zint \-b EAN13 \-\-batch \-i \[aq]ean13nos.txt\[aq] \-o \[aq]ean\[ti]\[ti]\[ti].gif\[aq]
 .EE
 .SH BUGS
 Please send bug reports to https://sourceforge.net/p/zint/tickets/.