Make Pintos able to build with "gcc -m32" on x86-64 hosts without the
-rw-r--r-- 1390 AUTHORS
-rw-r--r-- 4621 LICENSE
-rw-r--r-- 244 Makefile
drwxr-xr-x - doc
drwxr-xr-x - specs
drwxr-xr-x - src
drwxr-xr-x - tests