build: add support for choosing a different url filename part than the output file

...ools-firmware-utils-tplink-safeloader-clean-up-code.patch

...fix-support-list-format-clean-up-vendor-information.patch

...oader-add-version-1.1-support-to-CPE210-220-510-520.patch

...-ICMPv6-redirects-with-prohibited-blackholed-source.patch

...h-when-using-mesh-11s-VIF-together-with-another-VIF.patch

...delatech-community-firmware-as-an-additional-choice.patch

...2-mac80211-ath9k-add-correct-MAC-BB-name-for-ar9561.patch

...ort-for-TP-LINK-TL-WR941ND-v6-international-version.patch

.../0034-ar71xx-add-support-for-TP-Link-TL-WR1043ND-v3.patch

...r71xx-backport-ath10k-calibration-data-load-changes.patch

...t/0036-ar71xx-fix-AR71XX_MODEL-on-TP-Link-TL-WR703N.patch

...s-BROKEN-to-avoid-compile-failure-on-mipsel-targets.patch

...wrt/0038-OpenSSL-Added-source-old-to-PKG_SOURCE_URL.patch

...0039-lua-fix-installation-of-headers-for-host-build.patch

...e-fallback-to-vmalloc-instead-of-oom-kill-processes.patch

patches/openwrt/0041-x86-generic-refresh-kernel-config.patch

.../openwrt/0042-x86-generic-enable-pata_atiixp-driver.patch