Remove old fork-and-specialize API

As promised, this is the cleanup patch-set which removes the
old native "fork and specialize" API, which has been replaced
by a slightly-enhanced one which can close the Zygote socket
descriptors in the Zygote child.

Change-Id: Icaeab730bee8638354dc664524e4118cdd946d2f

Author: Dave Platt

dalvik/src/main/java/dalvik/system/Zygote.java

@@ -133,26 +133,14 @@ public static int fork() {
     public static int forkAndSpecialize(int uid, int gid, int[] gids, int debugFlags,
           int[][] rlimits, int mountExternal, String seInfo, String niceName, int[] fdsToClose) {
         preFork();
-        int pid = nativeForkAndSpecialize_new(
-                  uid, gid, gids, debugFlags, rlimits, mountExternal, seInfo, niceName, fdsToClose);
-        postFork();
-        return pid;
-    }
-
-    public static int forkAndSpecialize(int uid, int gid, int[] gids, int debugFlags,
-          int[][] rlimits, int mountExternal, String seInfo, String niceName) {
-        preFork();
         int pid = nativeForkAndSpecialize(
-                  uid, gid, gids, debugFlags, rlimits, mountExternal, seInfo, niceName);
+                  uid, gid, gids, debugFlags, rlimits, mountExternal, seInfo, niceName, fdsToClose);
         postFork();
         return pid;
     }
 
-    native public static int nativeForkAndSpecialize_new(int uid, int gid, int[] gids, int debugFlags,
-          int[][] rlimits, int mountExternal, String seInfo, String niceName, int[] fdsToClose);
-
     native public static int nativeForkAndSpecialize(int uid, int gid, int[] gids, int debugFlags,
-          int[][] rlimits, int mountExternal, String seInfo, String niceName);
+          int[][] rlimits, int mountExternal, String seInfo, String niceName, int[] fdsToClose);
 
     /**
      * Special method to start the system server process. In addition to the