sgml-common-native: fix the generation of sgml-docbook.cat

There would be build errors if multiple builds use the same SSTATE_DIR,
and the builds use the different versions' docbook-sgml-dtd-native, the
problems are: we have multiple versions docbook-sgml-dtd-native:

docbook-sgml-dtd-3.1-native
docbook-sgml-dtd-4.1-native
docbook-sgml-dtd-4.5-native

And they depend on sgml-common-native which installs the file
sysroot/etc/sgml/sgml-docbook.cat, this file is also included in the
sstate cache file (.tar.gz), but both the 3 versions
docbook-sgml-dtd-native may update the
sysroot/ect/sgml/sgml-docbook.cat, and it is a hardlink to
SYSROOT_DESTDIR/etc/sgml/sgml-docbook.cat, so the sgml-docbook.cat in
the sstate cache file may contain the
docbook-sgml-dtd-<version>-native's info, and there would be errors when
we mirror the sstate-cache to another build which uses a different
version.

Now we exclude the sgml-docbook.cat from the ${D}, and generate
sysroot/ect/sgml/sgml-docbook.cat dynamically will fix the problem, both
the sgml-common-native and docbook-sgml-dtd-<version>-native can update
it it correctly.

The similar to docbook-dsssl-stylesheets-native and openjade-native.

[YOCTO #5994]

(From OE-Core rev: 50683df81e1605ad7c03bc633aa55da7e97cfe62)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/openjade/openjade-native_1.3.2.bb

@@ -40,6 +40,7 @@ CFLAGS =+ "-I${S}/include"
 
 SSTATEPOSTINSTFUNCS += "openjade_sstate_postinst"
 SYSROOT_PREPROCESS_FUNCS += "openjade_sysroot_preprocess"
+CLEANFUNCS += "openjade_sstate_clean"
 
 # configure.in needs to be reloacted to trigger reautoconf
 do_extraunpack () {
@@ -97,3 +98,11 @@ openjade_sysroot_preprocess () {
     install -m 755 ${STAGING_BINDIR_NATIVE}/install-catalog ${SYSROOT_DESTDIR}${bindir_crossscripts}/install-catalog-openjade
 }
 
+openjade_sstate_clean () {
+	# Ensure that the catalog file sgml-docbook.cat is properly
+	# updated when the package is removed from sstate cache.
+	files="${sysconfdir}/sgml/sgml-docbook.bak ${sysconfdir}/sgml/sgml-docbook.cat"
+	for f in $files; do
+		[ ! -f $f ] || sed -i '/\/sgml\/openjade-${PV}.cat/d' $f
+	done
+}