net: ensure that net and net.unix can be imported together in the same program

vlib/net/unix/aasocket.c.v

@@ -1,6 +1,11 @@
 module unix
 
-#include <sys/un.h>
+import net
+
+const use_net = net.no_timeout
+
+// 104 for macos, 108 for linux => use the minimum
+const max_sun_path = 104
 
 // Select represents a select operation
 enum Select {
@@ -15,88 +20,3 @@ enum Select {
 // 	stream = C.SOCK_STREAM
 // 	seqpacket = C.SOCK_SEQPACKET
 // }
-
-struct C.sockaddr {
-	sa_family u16
-}
-
-const max_sun_path = 104
-
-// 104 for macos, 108 for linux => use the minimum
-
-struct C.sockaddr_un {
-mut:
-	//	sun_len    byte // only on macos
-	sun_family int
-	sun_path   [104]char // on linux that is 108
-}
-
-struct C.addrinfo {
-mut:
-	ai_family    int
-	ai_socktype  int
-	ai_flags     int
-	ai_protocol  int
-	ai_addrlen   int
-	ai_addr      voidptr
-	ai_canonname voidptr
-	ai_next      voidptr
-}
-
-struct C.sockaddr_storage {
-}
-
-// fn C.socket() int
-
-// fn C.setsockopt() int
-
-// fn C.htonl() int
-
-// fn C.htons() int
-
-// fn C.bind() int
-
-// fn C.listen() int
-
-// fn C.accept() int
-
-// fn C.getaddrinfo() int
-
-// fn C.connect() int
-
-// fn C.send() int
-
-// fn C.sendto() int
-
-// fn C.recv() int
-
-// fn C.recvfrom() int
-
-// fn C.shutdown() int
-
-// fn C.getpeername() int
-
-// fn C.inet_ntop(af int, src voidptr, dst charptr, dst_size int) charptr
-
-fn C.WSAAddressToStringA() int
-
-// fn C.getsockname() int
-
-// defined in builtin
-// fn C.read() int
-// fn C.close() int
-
-fn C.ioctlsocket() int
-
-// fn C.fcntl() int
-
-// fn C.@select() int
-
-// fn C.FD_ZERO()
-
-// fn C.FD_SET()
-
-// fn C.FD_ISSET() bool
-
-[typedef]
-struct C.fd_set {}