xf86-input-libinput: Changes to 'master'

[Peter Hutterer]

 configure.ac                  |   17 +++
 include/libinput-properties.h |    8 +
 man/libinput.man              |   53 ++++++++-
 src/xf86libinput.c            |  235 ++++++++++++++++++++++++++++++++++++++++--
 4 files changed, 302 insertions(+), 11 deletions(-)

New commits:
commit d84e0035d12a9655c09a6e8c619b1144be42c90c
Author: Peter Hutterer <peter.hutterer at who-t.net>
Date:   Tue Apr 17 13:51:53 2018 +1000

    Implement the custom acceleration curve options
    
    One new property, and the existing accel profile gets extended to keep one
    extra value. The new property libinput Accel Curve Points is a list of pairs
    of points to be added to the acceleration curve.
    
    libinput only supports adding points to the curve so we simply declare the
    behavior as undefined when the curve is set multiple times. Also helps to
    identify those that bother to read the man page before playing with random
    driver values.
    
    Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>

commit 6c75acfcdf6539713c3b62bc2227a4b215d05fdb
Author: Peter Hutterer <peter.hutterer at who-t.net>
Date:   Fri Apr 20 13:33:45 2018 +1000

    Use xf86SetStrOption to check for string options
    
    This one shows up in the log and marks it as used.
    
    Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>