system/core 64-bit cleanup.

This cleans up most of the size-related problems in system/core.
There are still a few changes needed for a clean 64-bit build,
but they look like they might require changes to things like the
fastboot protocol.

Change-Id: I1560425a289fa158e13e2e3173cc3e71976f92c0
diff --git a/toolbox/nandread.c b/toolbox/nandread.c
index 4666f26..d43b2fe 100644
--- a/toolbox/nandread.c
+++ b/toolbox/nandread.c
@@ -158,7 +158,7 @@
         printf("oobavail: %u\n", ecclayout.oobavail);
     }
     if (ecclayout.oobavail > spare_size)
-        printf("oobavail, %d > image spare size, %d\n", ecclayout.oobavail, spare_size);
+        printf("oobavail, %d > image spare size, %zu\n", ecclayout.oobavail, spare_size);
 
     ret = ioctl(fd, ECCGETSTATS, &initial_ecc);
     if (ret) {