bin_package: fail if ${S} doesn't actually contain anything

If the user is trying to use bin_package but the SRC_URI hasn't extracted
anything into ${S}, which is easily done when writing a recipe by hand, instead
of silently shippping an empty package abort the build.

(From OE-Core rev: bf5627ddbe5371eba62f73c33735fb1cf35c2194)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/bin_package.bbclass

@@ -26,7 +26,10 @@ do_compile[noexec] = "1"
 bin_package_do_install () {
     # Do it carefully
     [ -d "${S}" ] || exit 1
-    cd ${S} || exit 1
+    if [ -z "$(ls -A ${S})" ]; then
+        bbfatal bin_package has nothing to install. Be sure the SRC_URI unpacks into S.
+    fi
+    cd ${S}
     tar --no-same-owner --exclude='./patches' --exclude='./.pc' -cpf - . \
         | tar --no-same-owner -xpf - -C ${D}
 }