libcap: Cope with ${libdir} and ${base_libdir} being the same

${libdir} and ${base_libdir} may be the same. If they are don't try and
move files onto themselves.

(From OE-Core rev: bf136334aecc156c73eed76562819351de368eec)

Signed-off-by: Mike Crowe <mac@mcrowe.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/libcap/libcap.inc

@@ -12,6 +12,8 @@ DEPENDS_virtclass-native = "perl-native-runtime"
 
 SRC_URI = "${KERNELORG_MIRROR}/linux/libs/security/linux-privs/libcap2/${BPN}-${PV}.tar.bz2"
 
+PR = "r1"
+
 inherit lib_package
 
 do_configure() {
@@ -47,8 +49,10 @@ do_install() {
 do_install_append() {
 	# Move the library to base_libdir
 	install -d ${D}${base_libdir}
-	mv ${D}${libdir}/* ${D}${base_libdir}
-	rmdir ${D}${libdir}
+	if [ ! ${D}${libdir} -ef ${D}${base_libdir} ]; then
+		mv ${D}${libdir}/* ${D}${base_libdir}
+		rmdir ${D}${libdir}
+	fi
 }
 
 FILES_${PN}-dev += "${base_libdir}/*.so"