massively reduce the number of forks that busybox ash has to do while processing our scripts

this is accomplished simply by changing the order in which it looks for builtins and applets


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7815 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/busybox/patches/270-ash_performance.patch

@@ -0,0 +1,30 @@
+Index: busybox-1.4.2/shell/ash.c
+===================================================================
+--- busybox-1.4.2.orig/shell/ash.c	2007-07-01 05:33:08.371737750 +0200
++++ busybox-1.4.2/shell/ash.c	2007-07-01 05:33:11.703946000 +0200
+@@ -3957,12 +3957,6 @@
+ 	}
+ #endif
+ 
+-	if (is_safe_applet(name)) {
+-		entry->cmdtype = CMDNORMAL;
+-		entry->u.index = -1;
+-		return;
+-	}
+-
+ 	updatetbl = (path == pathval());
+ 	if (!updatetbl) {
+ 		act |= DO_ALTPATH;
+@@ -4074,6 +4068,12 @@
+ 		goto success;
+ 	}
+ 
++	if (is_safe_applet(name)) {
++		entry->cmdtype = CMDNORMAL;
++		entry->u.index = -1;
++		return;
++	}
++
+ 	/* We failed.  If there was an entry for this command, delete it */
+ 	if (cmdp && updatetbl)
+ 		delete_cmd_entry();