python 2.7: fix multilib patch to accept multiarch style paths

Using 'basename' to strip the prefix fails when using multiarch style paths.

(From OE-Core rev: c61c416a6504f7e8885df3c94c839d1031920a1c)

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

meta/recipes-devtools/python/python.inc

@@ -33,6 +33,12 @@ EXTRA_OECONF = "\
   ${PYTHONLSBOPTS} \
 "
 
+do_configure_prepend() {
+	libdirleaf="$(echo ${libdir} | sed -e 's:${prefix}/::')"
+	sed -i -e "s:SEDMELIBLEAF:${libdirleaf}:g" \
+		${S}/configure.ac
+}
+
 do_install_append () {
 	sed -i -e 's:${HOSTTOOLS_DIR}/install:install:g' \
 		-e 's:${HOSTTOOLS_DIR}/mkdir:mkdir:g' \