README: document project scope and add compatibility chart
tree6fdf4c34e0a76e0597e58f67c1e4b16742a47b3a
-rw-r--r-- 4860 README.md
-rwxr-xr-x 4456 build.sh
-rwxr-xr-x 94 clean.sh
-rw-r--r-- 403 config-static.sh
-rw-r--r-- 732 config.sh
-rw-r--r-- 8315 defs.sh
drwxr-xr-x - extra
drwxr-xr-x - patches
drwxr-xr-x - tarballs