GXemul Code2

Minor updates.

Some systems/compilers treat ignored return value from write() as an error, not a warning.

Do not warn about all ethernet addresses starting with 0x00 (such as the LUNA-88K machine).

Adding note about failure to run Xorg due to lack of wsfb driver in OpenBSD/luna88k 6.8.

Implementing the fdiv.dss 88K instruction.

Return the d register to what it was before an exception.

Implementing exception cases in 88K xmem_slow implementation.

Comments.

Including client in /etc/hosts makes xauth not complain.

Adding keyboard support to dev_luna88k.