xrandr: Changes to 'master'

[Giuseppe Bilotta]

 man/xrandr.man |   19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

New commits:
commit 9882680c9f7f433a47514a9cb799c79e3e10a024
Author: Pali Rohár <pali.rohar at gmail.com>
Date:   Sat Mar 10 16:23:29 2018 +0100

    Document that --dpi and --fbmm options set DPI of whole X screen
    
    Explicitly document and make it clear that those options do not change
    DPI of some monitor output. Also state that these options have no useful
    meaning for multi-monitor configuration.
    
    Signed-off-by: Pali Rohár <pali.rohar at gmail.com>
    Reviewed-by: Giuseppe Bilotta <giuseppe.bilotta at gmail.com>