Define SIGPIPE for Win32, fix sleep() for Win32

src/arch_win32.h

@@ -94,7 +94,7 @@ typedef int socklen_t;
   (((errcode) < 0) && (WSAGetLastError() == WSAECONNRESET))
 
 #define realpath(a, b) _fullpath((b), (a), MG_PATH_MAX)
-#define sleep(x) Sleep(x)
+#define sleep(x) Sleep((x) *1000)
 #define mkdir(a, b) _mkdir(a)
 
 #ifndef S_ISDIR
@@ -105,4 +105,8 @@ typedef int socklen_t;
 #define MG_ENABLE_DIRLIST 1
 #endif
 
+#ifndef SIGPIPE
+#define SIGPIPE 0
+#endif
+
 #endif