Change cpu data engine so that when a cpu goes offline, its stats drop to zero.
tree21a3f630701b7a705df42b845c2188f2137b5e14
-rw-r--r-- 117 AUTHORS
-rw-r--r-- 173 CMakeLists.txt
-rw-r--r-- 17992 COPYING
-rw-r--r-- 331 INSTALL
drwxr-xr-x - applet
drwxr-xr-x - data_engine