* Do not include system headers in shared files (stdlib.h).
* Don't include lcd.h only once in each driver.
* Remove some unnecessary headers from driver (e.g. syslog.h)
* Include <poll.h> instead of <sys/poll.h>
* Spelling fixes.
- 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
display. The patch applied cleanly, and compiled properly. At least,
"it worked for me." :) I don't have such a display, thus I cannot test that
the driver actually works, but it at least doesn't do nasty things or break
the compile. Thanks, Nathan!