Move problem 1-2 (join) into project 2 as the "wait" system call.
[pintos-anon] / solutions /
drwxr-xr-x   ..
-rw-r--r-- 390 README
-rw-r--r-- 4244 p1-1.patch
-rw-r--r-- 10283 p1-2.patch
-rw-r--r-- 6972 p2-null.patch
-rw-r--r-- 26936 p2.patch
-rw-r--r-- 38984 p3.patch