Skip test on VS earlier than 2015.

test cases/common/145 whole archive/meson.build

@@ -1,5 +1,13 @@
 project('whole archive', 'c')
 
+cc = meson.get_compiler('c')
+
+if cc.get_id() == 'msvc'
+  if cc.version().version_compare('<19')
+    error('MESON_SKIP_TEST link_whole only works on VS2015 or newer.')
+  endif
+endif
+
 stlib = static_library('allofme', 'libfile.c')
 
 # Nothing in dylib.c uses func1, so the linker would throw it