Remove residual blank line at start of MakefileThis is a residual of the $FreeBSD$ removal.MFC After: 3 days (though I'll just run the command on the branches)Sponsored by: Netflix
sys: Remove $FreeBSD$: one-line sh patternRemove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/
Drop <bsd.man.mk> support from <bsd.kmod.mk>.Not objected to by: -current
Add ng_ip_input. A new netgraph node for queuing IP packets into themain IP input processing code.