bin: don't build vlc.exe for Winstore builds

winvlc.c uses API's not available in UWP:
- SetProcessMitigationPolicy
- SetProcessDEPPolicy
- SetDllDirectory
- SetDefaultDllDirectories
- MessageBox

GetCommandLine is allowed but not in mingw-w64 yet.

bin/meson.build

@@ -1,7 +1,7 @@
 # Do we build the main VLC binary?
 build_vlc = get_option('vlc')
 
-if build_vlc and (host_system != 'darwin' or have_osx)
+if build_vlc and (host_system != 'darwin' or have_osx) and not have_win_store
     vlc_sources = []
 
     vlc_deps = [m_lib, dl_lib, threads_dep]

configure.ac

@@ -4796,7 +4796,7 @@ dnl  the VLC binary
 dnl
 AC_ARG_ENABLE([vlc],
   AS_HELP_STRING([--enable-vlc], [build the VLC media player (default enabled)]))
-AM_CONDITIONAL([BUILD_VLC], [test "${enable_vlc}" != "no"])
+AM_CONDITIONAL([BUILD_VLC], [test "${enable_vlc}" != "no" -a "$vlc_winstore_app" = "0"])
 
 dnl
 dnl Fuzzer (at the end not to mess dependencies FLAGS)