Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

Bump copyright (forgotten part of r293340)

MFC after: 3 days
X-MFC-to: stable/10
X-MFC-with: r293340

Increase maximum buffer size for `-x cmd' value

MFC after: 3 days
X-MFC-to: stable/10

Add new libraries/utilities for data throughput visualization.
dpv(3): dialog progress view library
dpv(1): stream data from stdin or multiple paths with dialog progress view
figpar(3): configuration file parsing library

Reviews: D714
Reviewed by: jelischer, shurd
Discussed at: MeetBSD California 2014 Vendor/Dev Summit
Discussed on: -current
MFC after: 21 days
X-MFC-to: stable/10 stable/9