patch 7.4.2285

Problem:    Generated files are outdated.
Solution:   Generate the files.  Avoid errors when generating prototypes.

src/os_win32.c

@@ -137,6 +137,8 @@ typedef int PSNSECINFO;
 typedef int PSNSECINFOW;
 typedef int STARTUPINFO;
 typedef int PROCESS_INFORMATION;
+typedef int LPSECURITY_ATTRIBUTES;
+# define __stdcall /* empty */
 #endif
 
 #ifndef FEAT_GUI_W32