games/libretro-*: make portversions go forwards

 - games/libretro-desmume2015: restore accidentally deleted
   PORTREVISION
 - games/libretro-emux: distversion now reflects date of last commit,
   but grabs the same git commit.  Adjust PORTEPOCH.
 - games/libretro-snes9x2005: upstream uses versions, but didn't release
   a new one since 2013; use a git-describe style inbetween version.
 - games/libretro-snes9x2010: restore accidentally dropped PORTEPOCH

Reported by:	portmgr

games/libretro-desmume2015/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	libretro-desmume2015
 DISTVERSION=	0.20220405
+PORTREVISION=	3
 CATEGORIES=	games
 
 MAINTAINER=	ports@FreeBSD.org

games/libretro-emux/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	libretro-emux
 DISTVERSION=	0.20191014
+PORTEPOCH=	1
 CATEGORIES=	games
 
 MAINTAINER=	ports@FreeBSD.org

games/libretro-snes9x2005/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	libretro-snes9x2005
-DISTVERSION=	0.20220725
-PORTREVISION=	1
+DISTVERSION=	1.34-409
+DISTVERSIONSUFFIX=	-gfd45b0e
 CATEGORIES=	games
 
 MAINTAINER=	ports@FreeBSD.org
@@ -19,7 +19,6 @@ USE_LDCONFIG=	yes
 USE_GITHUB=	yes
 GH_ACCOUNT=	libretro
 GH_PROJECT=	snes9x2005
-GH_TAGNAME=	fd45b0e055bce6cff3acde77414558784e93e7d0
 
 PLIST_FILES=	lib/libretro/snes9x2005_libretro.so
 

games/libretro-snes9x2005/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1698314802
-SHA256 (libretro-snes9x2005-0.20220725-fd45b0e055bce6cff3acde77414558784e93e7d0_GH0.tar.gz) = a400aa12955b8aa6f877d2d0fb852d17b76121a4730858e349ed434ea56e8f05
-SIZE (libretro-snes9x2005-0.20220725-fd45b0e055bce6cff3acde77414558784e93e7d0_GH0.tar.gz) = 318301
+TIMESTAMP = 1699378017
+SHA256 (libretro-snes9x2005-1.34-409-gfd45b0e_GH0.tar.gz) = 77ae5ff73bec2c07d812bb3ebf793aa1b92edbca53c792a3a17aeff0da88c7e5
+SIZE (libretro-snes9x2005-1.34-409-gfd45b0e_GH0.tar.gz) = 318039

games/libretro-snes9x2010/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	libretro-snes9x2010
 DISTVERSION=	0.20230220
+PORTEPOCH=	1
 CATEGORIES=	games
 
 MAINTAINER=	ports@FreeBSD.org