Fix Windows compilation

PUBLISHED_FROM=04bcd98025263f32d337730cf179bdfc35b683f1

mongoose.h

@@ -140,6 +140,7 @@
 #endif
 
 #define _WINSOCK_DEPRECATED_NO_WARNINGS 1
+#define _CRT_SECURE_NO_WARNINGS
 
 #include <assert.h>
 #include <direct.h>
@@ -163,6 +164,10 @@
 #include <windows.h>
 #include <process.h>
 
+#if defined(_MSC_VER) && _MSC_VER >= 1800
+#define strdup _strdup
+#endif
+
 #ifndef EINPROGRESS
 #define EINPROGRESS WSAEINPROGRESS
 #endif