bash: provide the /bin/sh symlink.

app-shells/bash/bash-4.3.27.recipe

@@ -39,7 +39,7 @@ CHECKSUM_SHA256_026="2ecc12201b3ba4273b63af4e9aad2305168cf9babf6d11152796db08724
 CHECKSUM_SHA256_027="1eb76ad28561d27f7403ff3c76a36e932928a4b58a01b868d663c165f076dabe"
 PATCHES="bash-kill_by_name.patch"
 SOURCE_DIR="bash-4.3"
-REVISION="2"
+REVISION="3"
 LICENSE="GNU GPL v3"
 COPYRIGHT="1987-2014 Free Software Foundation, Inc."
 ARCHITECTURES="x86_gcc2 x86 x86_64"
@@ -48,6 +48,7 @@ PROVIDES="
 	bash = $portVersion
 	cmd:bash = $portVersion
 	cmd:bashbug = $portVersion
+	cmd:sh
 	"
 
 REQUIRES="
@@ -85,4 +86,5 @@ BUILD()
 INSTALL()
 {
 	make install
+	ln -s bash $binDir/sh 
 }