Log Message:
Update to 1.2.0:

Gaetan Nadon (4):
      config: the file COPYING in EXTRA_DIST is redundant
      config: replace deprecated AM_CONFIG_HEADER with AC_CONFIG_HEADERS
      man: replace hard coded man page section with substitution strings
      config: move man pages into their own directory

Jon Lund Steffensen (1):
      Port xbacklight to XCB

Matt Turner (1):
      xbacklight 1.2.0