Compress Factor image file for loading by the VM

The tools.image-compressor vocabulary compresses Factor images such that the VM can load it and decompress it on the fly. Compressed and uncompressed Factor images are both supported by the VM and are only determined by their image headers.

You can also run the compressor on the current Factor image directly from the commandline:
factor -run=tools.image-compressor

To uncompress a compressed Factor image, you can start Factor with
factor -i=<compressed image>

then save-image-and-exit