Package looks more sane now :-)

- Update to version 2.0.0:
+ Device: Add rumble support.
+ Make the devices rumble in manette-test if they support it.
+ Mapping:
- Initialize the bindings to 0 before using them, avoiding
improper values in non used fields.
- Ensures the binding value inversion is disabled by default,
avoiding an unexpected state.
- Clear errno before using it to avoid string to uint16
convertions to fail on valid inputs.
- Silently skip the 'platform' mapping key as it is neither
useful nor erroneous.
+ Monitor:
- Fix the 'device-disconnected' signal marshaller.
- Fix the devices hash table hash and comparison functions.
+ Build system change:
- Make manette-test properly depend on libmanette.
- Change the package name from libmanette to manette.
- Change the soname from liblibmanette.so to libmanette.so.
- Fix the soname version.
+ Fix the license header of manette-version.h.in, which was
accidentaly not matching the one of the library.
- Following upstream changes and fixes, rename liblibmanette-0_2
subpackage to libmanette-0_2-0, change where applicable, set
package_version define to 0_2-0.
- Tweak spec, use autosetup macro.