GXemul Code2

Actually not implemented yet.

Working on basic RISC-V and i960 stuff. Also making all CPUs use a common routine for indicating the current PC in disassembly output. And beginning to add i960 b.out support (again).

Sprite multi-machine experiments.

Implementing the first RISC-V instruction: c.addi

Some minimal first steps on implementing RISC-V stuff: 16- vs 32-bit instruction lengths. ELF loading. test and bare machines, for testing.

Experimenting with moving the rpath flag to always be used.

Also check for X11R7 in the configure script, in addition to X11R6.

Moving the LUNA88K framebuffer to its own device file. Beginning to implement the LUNA88K front panel LCD. Also fixing a bug where the rightmost pixel (or 8 pixels in the case of monochrome) were not drawn.

Updating the TODO.

Do not print idle message when stopping a machine.