Rename task to packagegroup

"Package group" is a much more appropriate name for these than task,
since we use the word task to describe units of work executed by
BitBake.

(From OE-Core rev: 424dcf7046e4ad09dcc664eb1992201195247fcf)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/packagegroups/packagegroup-core-tools-debug.bb

@@ -0,0 +1,33 @@
+#
+# Copyright (C) 2008 OpenedHand Ltd.
+#
+
+DESCRIPTION = "Debug tools tasks for OE-Core"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COREBASE}/LICENSE;md5=3f40d7994397109285ec7b81fdeb3b58 \
+                    file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
+
+PACKAGES = "\
+    ${PN} \
+    ${PN}-dbg \
+    ${PN}-dev \
+    "
+
+PR = "r1"
+
+PACKAGE_ARCH = "${MACHINE_ARCH}"
+
+ALLOW_EMPTY = "1"
+
+MTRACE = ""
+MTRACE_libc-glibc = "libc-mtrace"
+
+RDEPENDS_${PN} = "\
+    gdb \
+    gdbserver \
+    tcf-agent \
+    openssh-sftp-server \
+    rsync \
+    strace \
+    ${MTRACE} \
+    "