4 small items in this:

- when we don't have in_addr_t, use uint32.
- a forgotten initialization of slave_proxy_id in sql/log_event.cc (was not really "forgot", was
"we needn't init it there", but there was one case where we needed...).
- made slave_proxy_id always meaningful in THD and Log_event, so we can
rely more on it (no need to test if it's meaningful). THD::slave_proxy_id
is equal to THD::thread_id except for the slave SQL thread.
- clean up the slave's temporary table (i.e. free their memory) when slave
server shuts down.

include/my_net.h

@@ -63,6 +63,15 @@ C_MODE_START
 #define O_NONBLOCK 1    /* For emulation of fcntl() */
 #endif
 
+/*
+  On OSes which don't have the in_addr_t, we guess that using uint32 is the best
+  possible choice. We guess this from the fact that on HP-UX64bit & FreeBSD64bit
+  & Solaris64bit, in_addr_t is equivalent to uint32. And on Linux32bit too.
+*/
+#ifndef HAVE_IN_ADDR_T
+#define in_addr_t uint32
+#endif
+
 /* Thread safe or portable version of some functions */
 
 void my_inet_ntoa(struct in_addr in, char *buf);