termcap entry reordering requires ex (which is available via usr.bin/vi), which
breaks on build hosts where installworld is run with MK_VI == no (or when
make delete-old is run on ^/projects/building-blocks as vi, et al, are
removed on the branch when the knob is tweaked to => "no")
Reordering termcap was believed to improve performance, but the file is now
accessed via /etc/termcap.db, so /etc/termcap (and /usr/share/misc/termcap by
proxy) access is less preferred.
Reordering the file broke the historical comment <-> entry mapping as well,
which could muddle the purpose of entries in the file, so it could be
potentially harmful to readers in its reordered state.
Discussion took place on hackers@ here:
https://lists.freebsd.org/pipermail/freebsd-hackers/2014-December/046657.html
Discussed with: -hackers, mp
MFC after: 1 month
Sponsored by: EMC / Isilon Storage Division
