blktool: upgrade to 4-6

Unlike the big jump in version (4 -> 4-6), blktool is actually quite stable since
version 4 (2005). All the changes in 4-6 are about typo fix and debian package
control enhancement.

Fixed metadata accordingly.

Signed-off-by Kevin Tian <kevin.tian@intel.com>

meta/packages/blktool/blktool_4-6.bb

@@ -0,0 +1,14 @@
+DESCRIPTION = "blktool is used for querying and/or changing settings of a block device. It is like hdparm but a more general tool, as it works on SCSI, IDE and SATA devices"
+HOMEPAGE = "http://packages.debian.org/unstable/admin/blktool"
+LICENSE = "GPLv2+"
+LIC_FILES_CHKSUM = "file://COPYING;md5=94d55d512a9ba36caa9b7df079bae19f \
+                    file://blktool.c;beginline=7;endline=8;md5=a5e798ea98fd50972088968a15e5f373"
+DEPENDS = "glib-2.0"
+
+SRC_URI = "${DEBIAN_MIRROR}/main/b/blktool/blktool_4.orig.tar.gz \
+           ${DEBIAN_MIRROR}/main/b/blktool/blktool_4-6.diff.gz;apply=yes"
+
+PR = "r0"
+S = "${WORKDIR}/${PN}-4.orig"
+
+inherit autotools

meta/packages/blktool/blktool_4.bb

@@ -1,9 +0,0 @@
-DESCRIPTION = "Display or change block device settings"
-LICENSE = "GPLv2"
-DEPENDS = "glib-2.0"
-
-SRC_URI = "${DEBIAN_MIRROR}/main/b/blktool/blktool_4.orig.tar.gz"
-
-S = "${WORKDIR}/${PN}-${PV}.orig"
-
-inherit autotools