msvs: add some touches to many-actions test to make sure incremental works correctly

test/many-actions/gyptest-many-actions-unsorted.py

Index: test/many-actions/gyptest-many-actions-unsorted.py
diff --git a/test/many-actions/gyptest-many-actions-unsorted.py b/test/many-actions/gyptest-many-actions-unsorted.py
index c2d13a98b0139b451aa470bad8f07cd9b73eec60..5cb0338788b63cafdced9d18cd9b708627e435a0 100644
--- a/test/many-actions/gyptest-many-actions-unsorted.py
+++ b/test/many-actions/gyptest-many-actions-unsorted.py
@@ -17,4 +17,18 @@ test.run_gyp('many-actions-unsorted.gyp')
 test.build('many-actions-unsorted.gyp', test.ALL)
 for i in range(15):
   test.built_file_must_exist('generated_%d.h' % i)
+
+# Make sure the optimized cygwin setup doesn't cause problems for incremental
+# builds.
+test.touch('file1')
+test.build('many-actions-unsorted.gyp', test.ALL)
+
+test.touch('file0')
+test.build('many-actions-unsorted.gyp', test.ALL)
+
+test.touch('file2')
+test.touch('file3')
+test.touch('file4')
+test.build('many-actions-unsorted.gyp', test.ALL)
+
 test.pass_test()