xf86-input-acecad revival

[Giuseppe Bilotta]

This is an attempt to revive development for the xf86-input acecad driver. The
first step is to do some cleanup and add support for Linux kernel versions 2.6.x

Shortlog:

Giuseppe Bilotta (4):
      Clean up defines, and add an include to fix compilation when LINUX_INPUT is defined
      Use the proper MessageType for probed, default, info and error messages.
      Support 2.6.x kernels.
      Bump to 1.1.1.