[arch-dev-public] [signoff] netcfg v2.5.4

Mostly bugfixes and some minor features that are isolated or trivial netcfg v2.5.4 - Bridge connection example - Add simple bridging support - Add adjustable netmask to IP='static' netcfg v2.5.3 - Add missing include. FS#18411 - Fix FS#18391, FS#18385, broken rfkill, handle hard rfkill situations more appropriately - Modify examples to prevent quoting issues as illustrated by FS#18405 - Handle undefined wireless SECURITY, make example explicit