smstools3: remove bash dependency on packaged scripts

An earlier patch to update smstools3 to v3.1.21 dropped the RDEPENDS for
bash, which caused qc errors during packaging, since the example scripts
still used /bin/bash as the command executor. This patch updates the scripts
to use /bin/sh instead. No known bash-only syntax is present in the packaged
scripts and they run ok under Busybox.

Upstream-Status: Submitted [http://smstools3.kekekasvi.com/topic.php?post=6188#post6188]
Signed-off-by: Bill Randle <bill.randle@gmail.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-oe/recipes-connectivity/smstools3/smstools3/scripts_no_bash.patch

@@ -0,0 +1,32 @@
+--- smstools3.orig/scripts/sendsms	2006-02-04 11:52:06.000000000 -0800
++++ smstools3/scripts/sendsms	2017-12-30 15:40:28.009169106 -0800
+@@ -1,4 +1,4 @@
+-#!/bin/bash
++#!/bin/sh
+ # This script send a text sms at the command line by creating
+ # a sms file in the outgoing queue.
+ 
+--- smstools3.orig/scripts/sms2html	2006-02-04 11:52:06.000000000 -0800
++++ smstools3/scripts/sms2html	2017-12-30 15:39:17.496694390 -0800
+@@ -1,4 +1,4 @@
+-#!/bin/bash
++#!/bin/sh
+ 
+ # This script converts a received sms file into a html file. 
+ 
+--- smstools3.orig/scripts/sms2unicode	2006-02-04 11:52:06.000000000 -0800
++++ smstools3/scripts/sms2unicode	2017-12-30 15:33:14.477250179 -0800
+@@ -1,4 +1,4 @@
+-#!/bin/bash
++#!/bin/sh
+ 
+ # This script converts a received sms file into a pure unicode text file.
+ 
+--- smstools3/scripts/unicode2sms	2006-02-04 11:52:06.000000000 -0800
++++ smstools3/scripts/unicode2sms.new	2017-12-30 15:33:56.918536044 -0800
+@@ -1,4 +1,4 @@
+-#!/bin/bash
++#!/bin/sh
+ 
+ # This script converts a pure unicode text file into an sms file for sending.
+ 

meta-oe/recipes-connectivity/smstools3/smstools3_3.1.21.bb

@@ -6,7 +6,8 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=4d21efa1bb2a186360dde4035f860682"
 HOMEPAGE = "http://smstools3.kekekasvi.com"
 
 SRC_URI = "http://smstools3.kekekasvi.com/packages/${BP}.tar.gz \
-           file://sms_binpath.patch"
+           file://sms_binpath.patch \
+           file://scripts_no_bash.patch"
 
 SRC_URI[md5sum] = "6a9f038fb38a49cc3a4f8f14a88fb8af"
 SRC_URI[sha256sum] = "a26ba4c02b16f6cf13177bffca6c9230dc5fefaeba8e3030cd4e4905f6a92084"