Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

lmcconfig(8): bump to WARNS=3, fix typo in usage while here

Slight style(9) improvments
- function definitions
- sort #include

Fix type used to hold fgetc(3) output, this should help arm and powerpc
which have char == unsigned char

Remove useless conditional.

`vga' cannot be less than 0x3f when reaching the check.

Coverity Prevent: CID 5196

Include string.h for strncpy prototype
Include strings.h for bcopy and bzero prototype

Add the lmcconfig tool for controlling the lmc driver. Add man pages and
glue.

Submitted by: David Boggs