Fix previous 2 overhasty commits which broke required signedness of address shifts
treeea52960f4f430ab584687cbef966c588a2d63535
-rw-r--r-- 6389 Makefile.include
-rw-r--r-- 1778 README
-rw-r--r-- 4738 README-BUILDING
-rw-r--r-- 4937 README-EXAMPLES
drwxr-xr-x - apps
drwxr-xr-x - backyard
drwxr-xr-x - core
drwxr-xr-x - cpu
drwxr-xr-x - doc
drwxr-xr-x - examples
drwxr-xr-x - platform
drwxr-xr-x - tools