modular xorg.
- supply corresponding USE_XORG for all imake-using ports that need it
- USE_IMAKE no longer implies USE_XLIB in absence of USE_XORG
- retire USE_X_PREFIX which is not really used anywhere after the
above change
- a few minor nits like whitespace and SF macro
Tested by: 2 tinderbox runs by pav
Approved by: portmgr (pav)
Xrsh is designed to allow you to start an X client on a remote machine
with the window displayed on the current server's $DISPLAY. It has
many options that give you the ability to propagate environment
variables (including DISPLAY) to the remote system and works with
various types of X server access control including xauth and xhost.
Xrlogin opens a local xterm window and runs rlogin or telnet to
connect to a remote machine.
PR: ports/67855
Submitted by: KIMURA Yasuhiro <yasu@utahime.org>
