Drop usage of old-age BSD types in generically used Cygwin headers

u_char, u_short, u_int, u_long are BSD-only types.  Remove them from
Cygwin headers which are supposed to be used in a non-BSD scenario.
Drop special Cygwin handling of those types in sys/types.h.

newlib:
	* libc/include/sys/types.h (u_char,u_short,u_int,u_long): Drop
	Cygwin exception.

cygwin:
	* fhandler_socket.cc (fhandler_socket::ioctl): Accommodate change
	in include/asm/socket.h.  Continue using u_long since that's the
	MS type here.
	* include/asm/socket.h: Since the type given in _IOR/_IOW macros
	is only used for its sizeof, replace u_long with equivalent long.
	* netdb.h (getnetbyaddr): Fix prototype.
	* netinet/ip.h: Replace old BSD-only types with generically defined
	old BSD types (u_char -> u_int8_t, etc).
	* netinet/tcp.h: Ditto.
	* netinet/udp.h: Ditto.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

winsup/cygwin/include/netinet/ip.h

@@ -52,28 +52,28 @@
  */
 struct ip {
 #ifdef _IP_VHL
-	u_char  ip_vhl;			/* version << 4 | header length >> 2 */
+	u_int8_t  ip_vhl;		/* version << 4 | header length >> 2 */
 #else
 #if __BYTE_ORDER == __LITTLE_ENDIAN
-	u_int   ip_hl:4,		/* header length */
-		ip_v:4;			/* version */
+	unsigned int ip_hl:4,		/* header length */
+		     ip_v:4;		/* version */
 #endif
 #if __BYTE_ORDER == __BIG_ENDIAN
-	u_int   ip_v:4,			/* version */
-		ip_hl:4;		/* header length */
+	unsigned int ip_v:4,		/* version */
+		     ip_hl:4;		/* header length */
 #endif
 #endif /* not _IP_VHL */
-	u_char  ip_tos;			/* type of service */
-	u_short ip_len;			/* total length */
-	u_short ip_id;			/* identification */
-	u_short ip_off;			/* fragment offset field */
+	u_int_8   ip_tos;		/* type of service */
+	u_int16_t ip_len;		/* total length */
+	u_int16_t ip_id;		/* identification */
+	u_int16_t ip_off;		/* fragment offset field */
 #define IP_RF 0x8000			/* reserved fragment flag */
 #define IP_DF 0x4000			/* dont fragment flag */
 #define IP_MF 0x2000			/* more fragments flag */
 #define IP_OFFMASK 0x1fff		/* mask for fragmenting bits */
-	u_char  ip_ttl;			/* time to live */
-	u_char  ip_p;			/* protocol */
-	u_short ip_sum;			/* checksum */
+	u_int8_t  ip_ttl;		/* time to live */
+	u_int8_t  ip_p;			/* protocol */
+	u_int16_t ip_sum;		/* checksum */
 	struct  in_addr ip_src,ip_dst;  /* source and dest address */
 };
 
@@ -208,16 +208,16 @@ struct ip {
  * Time stamp option structure.
  */
 struct  ip_timestamp {
-	u_char  ipt_code;		/* IPOPT_TS */
-	u_char  ipt_len;		/* size of structure (variable) */
-	u_char  ipt_ptr;		/* index of current entry */
+	u_int8_t ipt_code;		/* IPOPT_TS */
+	u_int8_t ipt_len;		/* size of structure (variable) */
+	u_int8_t ipt_ptr;		/* index of current entry */
 #if __BYTE_ORDER == __LITTLE_ENDIAN
-	u_int   ipt_flg:4,		/* flags, see below */
-		ipt_oflw:4;		/* overflow counter */
+	unsigned int ipt_flg:4,		/* flags, see below */
+		     ipt_oflw:4;	/* overflow counter */
 #endif
 #if __BYTE_ORDER == __BIG_ENDIAN
-	u_int   ipt_oflw:4,		/* overflow counter */
-		ipt_flg:4;		/* flags, see below */
+	unsigned int ipt_oflw:4,	/* overflow counter */
+		     ipt_flg:4;		/* flags, see below */
 #endif
 	union ipt_timestamp {
 		n_long  ipt_time[1];

winsup/cygwin/include/netinet/tcp.h

@@ -50,19 +50,19 @@ typedef u_int32_t tcp_cc;               /* connection count per rfc1644 */
  * Per RFC 793, September, 1981.
  */
 struct tcphdr {
-	u_short th_sport;               /* source port */
-	u_short th_dport;               /* destination port */
-	tcp_seq th_seq;                 /* sequence number */
-	tcp_seq th_ack;                 /* acknowledgement number */
+	u_int16_t th_sport;             /* source port */
+	u_int16_t th_dport;             /* destination port */
+	tcp_seq   th_seq;               /* sequence number */
+	tcp_seq   th_ack;               /* acknowledgement number */
 #if __BYTE_ORDER == __LITTLE_ENDIAN
-	u_int   th_x2:4,                /* (unused) */
-		th_off:4;               /* data offset */
+	unsigned int  th_x2:4,          /* (unused) */
+		      th_off:4;         /* data offset */
 #endif
 #if __BYTE_ORDER == __BIG_ENDIAN
-	u_int   th_off:4,               /* data offset */
-		th_x2:4;                /* (unused) */
+	unsigned int  th_off:4,         /* data offset */
+		      th_x2:4;          /* (unused) */
 #endif
-	u_char  th_flags;
+	u_int8_t  th_flags;
 #define TH_FIN  0x01
 #define TH_SYN  0x02
 #define TH_RST  0x04
@@ -71,9 +71,9 @@ struct tcphdr {
 #define TH_URG  0x20
 #define TH_FLAGS (TH_FIN|TH_SYN|TH_RST|TH_ACK|TH_URG)
 
-	u_short th_win;                 /* window */
-	u_short th_sum;                 /* checksum */
-	u_short th_urp;                 /* urgent pointer */
+	u_int16_t th_win;                 /* window */
+	u_int16_t th_sum;                 /* checksum */
+	u_int16_t th_urp;                 /* urgent pointer */
 };
 
 #define TCPOPT_EOL              0

winsup/cygwin/include/netinet/udp.h

@@ -42,10 +42,10 @@
  * Per RFC 768, September, 1981.
  */
 struct udphdr {
-	u_short	uh_sport;		/* source port */
-	u_short	uh_dport;		/* destination port */
-	u_short	uh_ulen;		/* udp length */
-	u_short	uh_sum;			/* udp checksum */
+	u_int16_t uh_sport;		/* source port */
+	u_int16_t uh_dport;		/* destination port */
+	u_int16_t uh_ulen;		/* udp length */
+	u_int16_t uh_sum;		/* udp checksum */
 };
 
 #endif