Backend: workaround toybox inclusion in Cyanogen Recovery

- add busybox to the zip to provide a uniform expected environment
- set up busybox symlinks in /tmp and execute anykernel.sh from a shell created with these at the front of the path, overriding the recovery applets

META-INF/com/google/android/update-binary

@@ -27,7 +27,7 @@ abort() { ui_print "$*"; umount /system; umount /data; exit 1; }
 
 show_progress 1.34 4;
 ui_print " ";
-mkdir -p /tmp/anykernel;
+mkdir -p /tmp/anykernel/bin;
 cd /tmp/anykernel;
 unzip -o "$ZIP";
 if [ $? != 0 -o -z "$(ls /tmp/anykernel)" ]; then
@@ -38,8 +38,8 @@ ui_print "$(file_getprop /tmp/anykernel/anykernel.sh kernel.string)";
 ui_print " ";
 ui_print "AnyKernel2 by osm0sis @ xda-developers";
 ui_print " ";
-/sbin/busybox mount -o ro /system;
+mount -o ro /system;
-/sbin/busybox mount /data;
+mount /data;
 
 if [ "$(file_getprop /tmp/anykernel/anykernel.sh do.devicecheck)" == 1 ]; then
   ui_print "Checking device...";
@@ -59,14 +59,19 @@ fi;
 if [ "$(file_getprop /tmp/anykernel/anykernel.sh do.initd)" == 1 ]; then
   ui_print "Creating init.d...";
   ui_print " ";
-  /sbin/busybox mount -o remount,rw /system;
+  mount -o remount,rw /system;
   mkdir /system/etc/init.d;
   set_perm_recursive 0 0 0755 0755 /system/etc/init.d;
-  /sbin/busybox mount -o remount,ro /system;
+  mount -o remount,ro /system;
 fi;
 
 ui_print "Installing kernel...";
-/sbin/sh /tmp/anykernel/anykernel.sh $2;
+chmod -R 755 /tmp/anykernel/tools /tmp/anykernel/bin;
+bb=/tmp/anykernel/tools/busybox;
+for i in $($bb --list); do
+  ln -s $bb /tmp/anykernel/bin/$i;
+done;
+PATH="/tmp/anykernel/bin:$PATH" $bb ash /tmp/anykernel/anykernel.sh $2;
 if [ $? != "0" ]; then
   abort;
 fi;
@@ -74,10 +79,10 @@ fi;
 if [ "$(file_getprop /tmp/anykernel/anykernel.sh do.modules)" == 1 ]; then
   ui_print " ";
   ui_print "Pushing modules...";
-  /sbin/busybox mount -o remount,rw /system;
+  mount -o remount,rw /system;
   cp -rf /tmp/anykernel/modules/* /system/lib/modules/;
   set_perm_recursive 0 0 0755 0644 /system/lib/modules;
-  /sbin/busybox mount -o remount,ro /system;
+  mount -o remount,ro /system;
 fi;
 
 if [ "$(file_getprop /tmp/anykernel/anykernel.sh do.cleanup)" == 1 ]; then