patch 7.4.2192
Problem: Generating prototypes with Cygwin doesn't work well.
Solution: Change #ifdefs. (Ken Takata)
diff --git a/src/proto/fileio.pro b/src/proto/fileio.pro
index 5f1bc75..748bf4c 100644
--- a/src/proto/fileio.pro
+++ b/src/proto/fileio.pro
@@ -33,7 +33,7 @@
int check_ei(void);
char_u *au_event_disable(char *what);
void au_event_restore(char_u *old_ei);
-void do_autocmd(char_u *arg, int forceit);
+void do_autocmd(char_u *arg_in, int forceit);
int do_doautocmd(char_u *arg, int do_msg, int *did_something);
void ex_doautoall(exarg_T *eap);
int check_nomodeline(char_u **argp);