xf86-video-sis: Changes to 'master'

[Connor Behan]

 src/sis300_accel.c |    7 ------
 src/sis310_accel.c |   54 -----------------------------------------------------
 src/sis_accel.c    |    6 -----
 3 files changed, 67 deletions(-)

New commits:
commit e834b2cdaedccff5e13cef86af23e46992c2530a
Author: Connor Behan <connor.behan at gmail.com>
Date:   Mon Aug 3 13:22:24 2015 -0400

    Remove upload / download EXA hooks
    
    Support based on something other than libc memcpy was never added, so
    these functions did not improve upon software fallback at all.
    
    Signed-off-by: Connor Behan <connor.behan at gmail.com>