Add percona meta package.

percona/DESCR

@@ -0,0 +1,2 @@
+Meta package which contains everything required for a particular
+version of Percona.

percona/Makefile

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+# $NetBSD$
+
+DISTNAME=	${MYSQL_PKG_PREFIX}-1.0
+CATEGORIES=	meta-pkgs
+MASTER_SITES=	# empty
+DISTFILES=	# empty
+
+MAINTAINER=	jperkin@joyent.com
+COMMENT=	Meta-package for a Percona environment
+LICENSE=	public-domain
+
+META_PACKAGE=	yes
+
+.include "../../mk/mysql.buildlink3.mk"
+
+.if empty(MYSQL_PKG_PREFIX:Mpercona*)
+BROKEN=		Only supports Percona packages
+.endif
+
+DEPENDS+=	p5-DBD-${MYSQL_PKG_PREFIX}-[0-9]*:../../databases/p5-DBD-mysql
+DEPENDS+=	${MYSQL_PKG_PREFIX}-xtrabackup-[0-9]*:../../joyent/percona-xtrabackup
+DEPENDS+=	quickbackup-percona-[0-9]*:../../joyent/quickbackup-percona
+
+.include "../../mk/bsd.pkg.mk"