make "adb bugreport" run "bugreport" (which invokes "dumpstate"
indirectly via system service) rather than "dumpstate", that way
even when adb is not running as root, dumpstate does run as root,
and can do things like collect VM traces.
diff --git a/adb/commandline.c b/adb/commandline.c
index b96674f..5756752 100644
--- a/adb/commandline.c
+++ b/adb/commandline.c
@@ -951,10 +951,8 @@
     }
 
     if(!strcmp(argv[0], "bugreport")) {
-        if (argc != 1) {
-            return 1;
-        }
-        do_cmd(ttype, serial, "shell", "dumpstate", "-", 0);
+        if (argc != 1) return usage();
+        do_cmd(ttype, serial, "shell", "bugreport", 0);
         return 0;
     }