Allow Win32 to compile under MinGW. Major changes are:

Win32 port is now called 'win32' rather than 'win'
        add -lwsock32 on Win32
        make gethostname() be only used when kerberos4 is enabled
        use /port/getopt.c
        new /port/opendir.c routines
        disable GUC unix_socket_group on Win32
        convert some keywords.c symbols to KEYWORD_P to prevent conflict
        create new FCNTL_NONBLOCK macro to turn off socket blocking
        create new /include/port.h file that has /port prototypes, move
          out of c.h
        new /include/port/win32_include dir to hold missing include files
        work around ERROR being defined in Win32 includes

src/backend/storage/lmgr/proc.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/storage/lmgr/proc.c,v 1.129 2003/02/18 02:13:24 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/storage/lmgr/proc.c,v 1.130 2003/05/15 16:35:29 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -944,6 +944,9 @@ ProcSendSignal(BackendId procId)
 bool
 enable_sig_alarm(int delayms, bool is_statement_timeout)
 {
+#ifdef WIN32
+# warning add Win32 timer
+#else
 	struct timeval fin_time;
 #ifndef __BEOS__
 	struct itimerval timeval;
@@ -1012,7 +1015,7 @@ enable_sig_alarm(int delayms, bool is_statement_timeout)
 	if (set_alarm(time_interval, B_ONE_SHOT_RELATIVE_ALARM) < 0)
 		return false;
 #endif
-
+#endif
 	return true;
 }
 
@@ -1026,6 +1029,9 @@ enable_sig_alarm(int delayms, bool is_statement_timeout)
 bool
 disable_sig_alarm(bool is_statement_timeout)
 {
+#ifdef WIN32
+#warning add Win32 timer
+#else
 	/*
 	 * Always disable the interrupt if it is active; this avoids being
 	 * interrupted by the signal handler and thereby possibly getting
@@ -1065,7 +1071,7 @@ disable_sig_alarm(bool is_statement_timeout)
 		if (!CheckStatementTimeout())
 			return false;
 	}
-
+#endif
 	return true;
 }
 
@@ -1098,6 +1104,9 @@ CheckStatementTimeout(void)
 	else
 	{
 		/* Not time yet, so (re)schedule the interrupt */
+#ifdef WIN32
+#warning add win32 timer
+#else
 #ifndef __BEOS__
 		struct itimerval timeval;
 
@@ -1120,6 +1129,7 @@ CheckStatementTimeout(void)
 			(statement_fin_time.tv_usec - now.tv_usec);
 		if (set_alarm(time_interval, B_ONE_SHOT_RELATIVE_ALARM) < 0)
 			return false;
+#endif
 #endif
 	}