Skip symlink tests on Windows.

test cases/common/268 install functions and follow symlinks/meson.build

@@ -1,5 +1,9 @@
 project('install_data following symlinks')
 
+if build_machine.system() == 'windows'
+    error('MESON_SKIP_TEST symlinks (typically) do not work on Windows.')
+endif
+
 install_data(
   'foo/link1',
   install_dir: get_option('datadir') / 'followed',

test cases/common/41 test args/pathtester.py

@@ -2,7 +2,7 @@
 
 import sys, subprocess
 
-if sys.platorm() == 'win32':
+if sys.platform == 'win32':
     cmd = ['xcopy', '/?']
 else:
     cmd = ['env']