Remove leftover empty leading comments/blank lines that had been
spacers between $FreeBSD$ and the following content in config files
in src/etc.
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D41548
Use the .PATH mechanism instead so keep installing them from lib/libc/gen
While here revert 347961 and 347893 which are no longer needed
Discussed with: manu
Tested by: manu
ok manu@