Fix paffinity_linux_module.c. The set and get functions transferred cpu

masks between the mask argument and a local PLPA mask.  There were three
problems:
1) The "get" function computed the number of bits as sizeof(mask),
   which is the size of the pointer to the mask rather than the mask
   itself.  So, only 4 bits were copied with m32 and 8 bits with m64.
   There are actually 1024 bits.
2) The "get" and "set" functions both copied a number of bits computed
   from the sizeof() mask, but sizeof() reports the number of bytes.
   We have to multiply by 8 to get the number of bits.
3) These two functions check to make sure tha the mask argument is not
   bigger than the PLPA mask.  But, the set function copies a number
   of bits in the PLPA mask, which is conceivably greater than the
   number of bits in the mask argument.  So, accesses to the mask
   argument may overrun that argument.
Problems 1 and 2 meant that one would encounter errors when the number of
cores exceeded 4 (with -m32) or 8 (with -m64).  Problem 3 probably caused
no errors.

This commit was SVN r21993.

opal/mca/paffinity/linux/paffinity_linux_module.c

@@ -178,7 +178,7 @@ static int linux_module_set(opal_paffinity_base_cpu_set_t mask)
         return OPAL_ERR_BAD_PARAM;
     } else {
         PLPA_CPU_ZERO(&plpa_mask);
-	for (i = 0; i < sizeof(plpa_mask) ; i++) {
+	for (i = 0; i < 8 * sizeof(mask) ; i++) {
 	    if (PLPA_CPU_ISSET(i,&mask)) {
 		PLPA_CPU_SET(i,&plpa_mask);
 	    }
@@ -210,7 +210,7 @@ static int linux_module_get(opal_paffinity_base_cpu_set_t *mask)
     if (0 != opal_paffinity_linux_plpa_sched_getaffinity(getpid(), sizeof(plpa_mask), &plpa_mask)) {
         return OPAL_ERR_IN_ERRNO;
     }
-    for (i = 0; i < sizeof(mask); i++) {
+    for (i = 0; i < 8 * sizeof(*mask); i++) {
 	if (PLPA_CPU_ISSET(i,&plpa_mask)) {
 	    PLPA_CPU_SET(i,mask);
 	}