classes/[gnome|gnomebase|mime]: enhance gnome related classes

This patch pulls in the gnome related classes from oe-core which
adds extra packaging rules and functionality whilst modularising things
so that one can get a subset of gnome functionality without adding a lot
of extra dependencies.

These aren't an exact copy of the classes from meta-openembedded, notable
differences are:
* gnome.bbclass - I dropped the BBCLASSEXTEND
* mime.bbclass:
  - updated coding style
  - use which to find update-mime-database program rather than hard coded
  - fix typo in populate_packges_append such that it's actually called

CC: Koen Kooi <koen@dominion.thruhere.net>
CC: Richard Purdie <richard.purdie@linuxfoundation.org>
(From OE-Core rev: 6ead00eba265211eae5a2423c155403c8c6d54d0)

Signed-off-by: Joshua Lock <josh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/gnomebase.bbclass

@@ -0,0 +1,30 @@
+def gnome_verdir(v):
+	import re
+	m = re.match("^([0-9]+)\.([0-9]+)", v)
+	return "%s.%s" % (m.group(1), m.group(2))
+
+SECTION ?= "x11/gnome"
+SRC_URI = "${GNOME_MIRROR}/${BPN}/${@gnome_verdir("${PV}")}/${BPN}-${PV}.tar.bz2;name=archive"
+
+DEPENDS += "gnome-common"
+
+FILES_${PN} += "${datadir}/application-registry  \
+	${datadir}/mime-info \
+	${datadir}/mime/packages \	
+	${datadir}/mime/application \
+	${datadir}/gnome-2.0 \
+	${datadir}/polkit* \
+	${datadir}/GConf \
+	${datadir}/glib-2.0/schemas \
+"
+
+FILES_${PN}-doc += "${datadir}/devhelp"
+
+inherit autotools pkgconfig
+
+do_install_append() {
+	rm -rf ${D}${localstatedir}/lib/scrollkeeper/*
+	rm -rf ${D}${localstatedir}/scrollkeeper/*
+	rm -f ${D}${datadir}/applications/*.cache
+}
+