* support display heights > 4 (treated like height = 4);
* determine number of user-defineable chars using get_free_chars();
* allow custom chars starting at a character position (offset) != 0
* update and extend documentation
- port_access_full is now called port_access_multiple and has a count parameter (LPT port stuff should be in lpt-port.h)
- Updated calling source files too
- Added support for ports in higher range, so that PCI LPT cards will work too (but I can't test this myself...)
- Enhanced formatting of in-file documentation a bit
- Updated docs of port.h in lcdproc-dev