xdm: Changes to 'master'

[Eric S. Raymond]

 man/xdm.man |  371 ++++++++++++++++++++++++++++++------------------------------
 1 file changed, 187 insertions(+), 184 deletions(-)

New commits:
commit 04e9edeb73dcd7de12e140ca38403c9772d8bebc
Author: Eric S. Raymond <esr at thyrsus.com>
Date:   Wed Jun 19 06:58:27 2013 -0400

    Don't rely on the ability to set tab stops.
    
    Instead, use TBL and CW fonts in examples.