openjdk8: bring back oracle-jre as a transitional package

removed in 46371e7636

prevents this old, removed package from borking the new alternatives groups
introduced in #47866 by replacing it if a user has this installed and
selected as the alternative for the java group, it can make the profile
script not run because /usr/lib/jvm/default-jre doesn't exist.

srcpkgs/openjdk8/template

@@ -1,7 +1,7 @@
 # Template file for 'openjdk8'
 pkgname=openjdk8
 version=8u332b05
-revision=1
+revision=2
 _jdk_update="${version#*u}"
 _jdk_update="${_jdk_update%b*}"
 _jdk_build="${version#*b}"
@@ -205,3 +205,9 @@ openjdk8-doc_package() {
 		fi
 	}
 }
+
+oracle-jre_package() {
+	depends="openjdk8-jre>=${version}_${revision}"
+	short_desc="Java Runtime Environment (transitional dummy package)"
+	build_style=meta
+}

srcpkgs/oracle-jre

@@ -0,0 +1 @@
+openjdk8