devshell.bbclass: Sync with OE since this no longer works at properly without this change

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@2738 311d38ba-8fff-0310-9ca6-ca027cbcb966

meta/classes/devshell.bbclass

@@ -2,9 +2,14 @@ EXTRA_OEMAKE[export] = "1"
 
 do_devshell[dirs] = "${S}"
 do_devshell[nostamp] = "1"
-do_devshell[interactive] = "1"
+
 devshell_do_devshell() {
-	bash -i
+	export TERMWINDOWTITLE="Bitbake Developer Shell"
+	${TERMCMD}
+	if [ $? -ne 0 ]; then
+	    echo "Fatal: '${TERMCMD}' not found. Check TERMCMD variable."
+	    exit 1
+	fi
 }
 addtask devshell after do_patch