[ipv6calc] Release 4.3.0 - IP2Location(MMDB) support + fixes

Hi again, 4.3.0 was released today, see below. Regards, Peter https://github.com/pbiering/ipv6calc/releases/tag/4.3.0 General: internal databases: update various fixes during regression various cosmetic changes fixes and adjustments required by lastet GCC Extensions: add support for IP2Location(MMDB) Database update scripts: tools/IP2Location-update.sh[.in]: add support for MMDB databases tools/IP2Location-update.sh[.in]: fix improper masking of token and password