databases/mysql57-{client, server}: Complete Upgrade of to 5.7.20 (as done by port-secteam in r452458)

Using FreeBSD-ports libcurl and protobuf instead of bundled ones
This upgrade includes:
-Deprecation of these syntax constructs for table and column:
.col_name
.tbl_name
.tbl_name.col_name
-Bugfix of memory-leak in mysqldump

Reviewed by:	mat (mentor)
Approved by:	mat (mentor)
Sponsored by:	Netzkommune GmbH
Differential Revision:	https://reviews.freebsd.org/D12712

databases/mysql57-client/Makefile

@@ -2,7 +2,6 @@
 # $FreeBSD$
 
 PORTNAME=	mysql
-PORTREVISION=	1
 PKGNAMESUFFIX=	57-client
 
 COMMENT=	Multithreaded SQL database (client)

databases/mysql57-server/Makefile

@@ -3,7 +3,7 @@
 
 PORTNAME?=	mysql
 PORTVERSION=	5.7.20
-PORTREVISION=	0
+PORTREVISION=	1
 CATEGORIES=	databases ipv6
 MASTER_SITES=	MYSQL/MySQL-5.7
 PKGNAMESUFFIX?=	57-server
@@ -26,8 +26,10 @@ MY_DBDIR=	/var/db/mysql
 MY_SECDIR=	/var/db/mysql_secure
 MY_TMPDIR=	/var/db/mysql_tmpdir
 
-LIB_DEPENDS+=	libevent.so:devel/libevent \
-		liblz4.so:archivers/liblz4
+LIB_DEPENDS+=	libcurl.so:ftp/curl \
+		libevent.so:devel/libevent \
+		liblz4.so:archivers/liblz4 \
+		libprotobuf.so:devel/protobuf
 
 CMAKE_BUILD_TYPE=	Release
 
@@ -56,6 +58,8 @@ CMAKE_ARGS+=	-DINSTALL_LAYOUT=FREEBSD \
 		-DWITH_LIBEVENT=system \
 		-DWITH_LZ4=system \
 		-DWITH_ZLIB=system \
+		-DWITH_PROTOBUF=system \
+		-DWITH_CURL=system \
 		-DINSTALL_MYSQLTESTDIR=0 \
 		-DWITH_DEBUG=0