cmds: add #!s

Without this, exec()ing these fails.

Found with `grep -L bin/sh $(grep -Rl Script)`

Bug: None
Test: exec()ed each of these scripts; I no longer get "exec format
error" for any of them.
Change-Id: I47db5007e5cc14ab91eb846b7bffecb925d37874

cmds/appwidget/appwidget

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "appwidget" on the device, which has a very rudimentary shell.
 base=/system
 export CLASSPATH=$base/framework/appwidget.jar

cmds/bmgr/bmgr

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "bmgr" on the device, which has a very rudimentary
 # shell.
 #

cmds/bu/bu

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "bu" on the device
 #
 base=/system

cmds/content/content

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "content" on the device, which has a very rudimentary shell.
 base=/system
 export CLASSPATH=$base/framework/content.jar

cmds/dpm/dpm

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "dpm" on the device
 #
 base=/system

cmds/ime/ime

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "pm" on the device, which has a very rudimentary
 # shell.
 #

cmds/input/input

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "input" on the device, which has a very rudimentary
 # shell.
 #

cmds/locksettings/locksettings

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "locksettings" on the device
 #
 base=/system

cmds/media/media

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "media_cmd" on the device, which has a very rudimentary
 # shell.
 #

cmds/pm/pm

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "pm" on the device, which has a very rudimentary
 # shell.
 #

cmds/requestsync/requestsync

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "requestsync" on the device
 #
 base=/system

cmds/sm/sm

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "sm" on the device, which has a very rudimentary
 # shell.
 #

cmds/svc/svc

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "am" on the device, which has a very rudimentary
 # shell.
 #

cmds/telecom/telecom

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "telecom" on the device
 #
 base=/system

cmds/uiautomator/cmds/uiautomator/uiautomator

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 #
 # Copyright (C) 2012 The Android Open Source Project
 #

cmds/vr/vr

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "vr" on the device
 #
 base=/system

cmds/wm/wm

@@ -1,3 +1,4 @@
+#!/system/bin/sh
 # Script to start "wm" on the device, which has a very rudimentary
 # shell.
 #