MediaInfo-gui: revbump after wxWidgets-3.2 update

Also simplify code with wxWidgets PortGroup

multimedia/mediainfo/Portfile

@@ -35,17 +35,20 @@ configure.env-append    PKG_CONFIG_SYSTEM_INCLUDE_PATH=${prefix}/include
 
 subport MediaInfo-gui {
     PortGroup           app 1.0
-    description         Identifies audio and video codecs in a media file. GUI
+    PortGroup           wxWidgets 1.0
+    wxWidgets.use       wxWidgets-3.2
+    revision            1
 
+    description         Identifies audio and video codecs in a media file. GUI
     long_description    MediaInfo supplies technical and tag information about a \
                         video or audio file via graphical utility
 
-    depends_lib-append  port:wxWidgets-3.2
+    depends_lib-append  port:${wxWidgets.port}
 
     set worksrcpath     ${workpath}/${worksrcdir}/Project/GNU/GUI
 
-    configure.args      --with-wx-config=${prefix}/Library/Frameworks/wxWidgets.framework/Versions/wxWidgets/3.1/bin/wx-config \
-                        --with-wx-prefix=${prefix}/Library/Frameworks/wxWidgets.framework/Versions/wxWidgets/3.1
+    configure.args      --with-wx-config=${wxWidgets.wxconfig} \
+                        --with-wx-prefix=${wxWidgets.prefix}
 
     app.executable      mediainfo-gui
     app.name            MediaInfo