spi_parport and gpio_parport first release

spi_parport:
- fully rework of the spi_parport
- first real test done

gpio_parport:
- add compile feature 'use parport exclusive'
- add compile feature 'claim parport' as a hack to share one parport
  by both drivers gpio_parport and spi_parport.
- correct GPIO signals, which are inverted used
- add module parameter for force setting interrupt line
- add module parameter for force setting GPIO base address