Adjusted doc to recent drop of VER_PATCH.
Updated URL.
Updated URL.
Moved LOADER.SYSTEM description.

The LOADER.SYSTEM description is now available in the cc65 Wiki (https://github.com/cc65/cc65/wiki/LOADER.SYSTEM).
Not splitting the docs anymore requires link adjustment.
Reflect the fact that LOADER.SYSTEM is delivered as 'targetutil'.
Added code that disables C128 BASIC's sprite-motion interrupt-handler.

That lets the mouse drivers control a sprite directly through the VIC's registers.
Merge pull request #90 from greg-king5/c128-sprite

Added code that disables C128 BASIC's sprite-motion interrupt-handler.
Removed references to $TRAVIS from Makefiles.

After all it seems much cleaner to explicitly control the behaviour from the .travis.yml file than to behave differently "under the hood" when detecting a Travis CI build.
Merge remote-tracking branch 'upstream/master'