fix SIGUSR1 signal incompatible windows bug.

xxx.go:64:3: undefined: syscall.SIGUSR1
xxx.go:65:3: undefined: syscall.SIGUSR2
xxx.go:68:3: undefined: syscall.SIGTSTP
xxx.go:111:5: undefined: syscall.SIGUSR1
xxx.go:112:5: undefined: syscall.SIGUSR2
xxx.go:115:5: undefined: syscall.SIGTSTP
xxx.go:119:5: undefined: syscall.SIGUSR1
xxx.go:120:5: undefined: syscall.SIGUSR2
xxx.go:123:5: undefined: syscall.SIGTSTP
xxx.go:224:3: undefined: syscall.Kill
xxx.go:224:3: too many errors

after fixing, it can be compiled normally

The items in question are: fvbock/endless#30

src/syscall/types_windows.go

@@ -80,8 +80,24 @@ var signals = [...]string{
 	13: "broken pipe",
 	14: "alarm clock",
 	15: "terminated",
+	/* compatible with windows */
+	16: "SIGUSR1",
+	17: "SIGUSR2",
+	18: "SIGTSTP",
+	/* compatible with windows */
 }
 
+/* compatible with windows */
+func Kill(...interface{}) error {
+	return nil;
+}
+const (
+	SIGUSR1 = Signal(16)
+	SIGUSR2 = Signal(17)
+	SIGTSTP = Signal(18)
+)
+/* compatible with windows */
+
 const (
 	GENERIC_READ    = 0x80000000
 	GENERIC_WRITE   = 0x40000000