Add some missing includes.

Source/cmFileCommand.cxx

@@ -15,6 +15,8 @@
 #include "cmHexFileConverter.h"
 #include "cmInstallType.h"
 #include "cmFileTimeComparison.h"
+#include "cmLocalGenerator.h"
+#include "cmGlobalGenerator.h"
 #include "cmCryptoHash.h"
 #include "cmAlgorithms.h"