revert u_int32_t changes for solaris -- must autoconfiscate, fixups for debian

configure.in

@@ -369,6 +369,8 @@ AC_CHECK_FUNCS(select socket strdup strerror)
 
 dnl check to see if we need -lsocket (solaris)
 
+AC_CHECK_LIB(dl,dlsym)
+
 V_NETLIBS=""
 AC_CHECK_LIB(socket,socket,V_NETLIBS="-lsocket $V_NETLIBS",,)
 

src/mDNSClientAPI.h

@@ -534,9 +534,6 @@ typedef   signed short mDNSs16;
 typedef unsigned short mDNSu16;
 #include <sys/types.h>
 typedef int32_t    mDNSs32;
-#ifndef u_int32_t
-# define u_int32_t uint32_t
-#endif
 typedef u_int32_t  mDNSu32;
 
 // To enforce useful type checking, we make mDNSInterfaceID be a pointer to a dummy struct

src/plugin.c

@@ -23,6 +23,8 @@
 #include "config.h"
 #endif
 
+#define _XOPEN_SOURCE 500  /** unix98?  pthread_once_t, etc */
+
 #include <errno.h>
 #include <pthread.h>
 #include <regex.h>