[AppVeyor] check the runtime deps of the outputs

appveyor.yml

@@ -66,6 +66,8 @@ build_script:
     - '%CYG_ROOT%/bin/bash -lc "cd \"$OLDPWD\" && make -s -f Makefile.win libs && make -j -s -f Makefile.win haxe && make -s -f Makefile.win haxelib"'
     - 'set PATH=%PATH%;%APPVEYOR_BUILD_FOLDER%'
     - 'set HAXEPATH=%APPVEYOR_BUILD_FOLDER%'
+    - '%CYG_ROOT%/bin/bash -lc "cd \"$OLDPWD\" && cygcheck haxe.exe"'
+    - '%CYG_ROOT%/bin/bash -lc "cd \"$OLDPWD\" && cygcheck haxelib.exe"'
     - '%CYG_ROOT%/bin/bash -lc "cd \"$OLDPWD\" && make -s -f Makefile.win package_bin"'
     - '%CYG_ROOT%/bin/bash -lc "cd \"$OLDPWD\" && make -s -f Makefile.win package_choco"'
     - move out\haxe.*.nupkg .