emulators/qemu7*: Move qemu70 to qemu7

QEMU 7.X.X branch is reaching EOL as the upstream has released 8.X.X
branch. So there is no point in keeping multiple versions from 7.X.X
series. This is an interim commit to prepare to move emulators/qemu to
emulators/qemu7 so that emulators/qemu can be upgraded to latest 8.X.X
release.

MOVED

@@ -7532,3 +7532,4 @@ graphics/ImageMagick7-nox11|graphics/ImageMagick7|2023-04-30|Flavorized
 graphics/ImageMagick6-nox11|graphics/ImageMagick6|2023-04-30|Flavorized
 security/gpgme-qt5|security/gpgme-qt@qt5|2023-05-02|Flavorized to add Qt6 support
 x11-wm/hyprland-devel|x11-wm/hyprland|2023-05-03|Out of date: use x11-wm/hyprland for now
+emulators/qemu70|emulators/qemu7|2023-05-04|Use emulators/qemu or emulators/qemu-devel

emulators/Makefile

@@ -115,7 +115,7 @@
     SUBDIR += qemu-user-static
     SUBDIR += qemu-user-static-devel
     SUBDIR += qemu6
-    SUBDIR += qemu70
+    SUBDIR += qemu7
     SUBDIR += qmc2
     SUBDIR += quasi88
     SUBDIR += reicast

emulators/qemu7/Makefile

@@ -1,12 +1,11 @@
 PORTNAME=	qemu
 PORTVERSION=	7.0.0
-PORTREVISION=	1
 CATEGORIES=	emulators
 MASTER_SITES=	https://download.qemu.org/
 DIST_SUBDIR=	qemu/${PORTVERSION}
 
 MAINTAINER=	bofh@FreeBSD.org
-COMMENT=	QEMU CPU Emulator ${${FLAVOR}_COMMENT} - 7.0.x
+COMMENT=	QEMU CPU Emulator ${${FLAVOR}_COMMENT} - 7.X.x
 WWW=		https://www.qemu.org/
 
 LICENSE=	GPLv2
@@ -28,13 +27,13 @@ LIB_DEPENDS+=	libepoxy.so:graphics/libepoxy
 
 FLAVORS=			default nox11 tools
 FLAVOR?=			${FLAVORS:[1]}
-default_PKGNAMESUFFIX=		70
+default_PKGNAMESUFFIX=		7
 default_CONFLICTS_INSTALL=	qemu-devel qemu-nox11 qemu-tools qemu-utils \
 				qemu6*
-nox11_PKGNAMESUFFIX=		70-nox11
+nox11_PKGNAMESUFFIX=		7-nox11
 nox11_CONFLICTS_INSTALL=	qemu qemu-devel qemu6*
 nox11_COMMENT=			(without X11)
-tools_PKGNAMESUFFIX=		70-tools
+tools_PKGNAMESUFFIX=		7-tools
 tools_COMMENT=			(tools only)
 tools_CONFLICTS_INSTALL=	qemu qemu-devel qemu-nox11 qemu-utils qemu6*
 tools_DESCR=			${.CURDIR}/pkg-descr-tools