Remove expired ports:
2017-01-15 net/cyphesis: Does not compile on FreeBSD 10+
2017-01-15 net/gpxe: does not build on FreeBSD 10.x and later
2017-01-15 net/openospfd: requires old CARP implementation (interface layer)
2017-01-15 security/openbsm-devel: is not needed under FreeBSD 10.x or higher
2017-01-15 security/ssh-copy-id: is already in the base system
2017-01-15 sysutils/apt: does not build on 10+
2017-01-15 archivers/tclmkziplib: Abandonware, please use bundled zlib package
[http://tcl.tk/man/tcl8.6/TclCmd/zlib.htm]
2017-01-15 x11-drivers/drm-kmod: this port is only for 9.3 systems
2017-01-15 audio/xmms-openspc: does not build on FreeBSD 10.x and later
2017-01-15 audio/aureal-kmod: does not build (and fetch)
2017-01-15 emulators/doscmd: does not build (accesses field of opaque structure)

Deprecate ports broken for FreeBSD 10.3-

Sponsored by:	Absolight

Support staging.

Add NO_STAGE all over the place in preparation for the staging support (cat:
security)

Mark IGNORE on ${OSVERSION} >= 1000024 where the script got added to the base
system.

Feature safe:	yes

Fix typo

Feature safe: yes

Add ssh-copy-id 5.6p1, small script which copy your ssh public-key to a
remote host; appending it to your remote authorized_keys.

Feature safe: yes