* Add more documentation about the inner working of this driver.
* Consolidate constant definitions.
* Stop the 'include-mania': Only include necessary header files within the .c
files.
* Use lpt-port.h to define LPT port register values.
* Modify some comments to conform the the style guide.
- explicitely declare void arguments
- make a few string args const
* better support for shorter displays in server screen
* make target to create top level tag file
- successfully tested with the* *Samsung 20S204DA2* *VFD
- Improvements in the support of displays without usercharacters
- Update of the documentation.