Fix for HPUX to not use -lc_r library.

Fixed hangup problem in net_clear() on HPUX and Windows. 

Build-tools/Do-compile

@@ -254,7 +254,7 @@ if (!$opt_no_test)
   $extra="";
   if ($opt_bdb)
   {
-    $extra.=" -O bdb_cache_size=16M";
+    $extra.=" --bdb_cache_size=16M --bdb_max_lock=60000"
   }
   if ($opt_innodb)
   {

configure.in

@@ -1315,11 +1315,11 @@ AC_CHECK_LIB(pthread,strtok_r)
 LIBS="$my_save_LIBS"
 if test "$ac_cv_lib_pthread_strtok_r" = "no"
 then
-  my_save_LIBS="$LIBS"
   AC_CHECK_LIB(c_r,strtok_r)
   case "$with_osf32_threads---$target_os" in
     # Don't keep -lc_r in LIBS; -pthread handles it magically
-    yes---* | *---freebsd* ) LIBS="$my_save_LIBS" ;;
+    yes---* | *---freebsd* | *---hpux*) LIBS="$my_save_LIBS" ;;
+
   esac
   AC_CHECK_FUNCS(strtok_r pthread_init)
 else

vio/viosocket.c

@@ -123,7 +123,6 @@ int vio_blocking(Vio * vio __attribute__((unused)), my_bool set_blocking_mode,
 #if !defined(HAVE_OPENSSL)
 #if !defined(___WIN__) && !defined(__EMX__)
 #if !defined(NO_FCNTL_NONBLOCK)
-
   if (vio->sd >= 0)
   {
     int old_fcntl=vio->fcntl_mode;
@@ -134,6 +133,8 @@ int vio_blocking(Vio * vio __attribute__((unused)), my_bool set_blocking_mode,
     if (old_fcntl != vio->fcntl_mode)
       r = fcntl(vio->sd, F_SETFL, vio->fcntl_mode);
   }
+#else
+  r= set_blocking_mode ? 0 : 1;
 #endif /* !defined(NO_FCNTL_NONBLOCK) */
 #else /* !defined(__WIN__) && !defined(__EMX__) */
 #ifndef __EMX__
@@ -155,6 +156,10 @@ int vio_blocking(Vio * vio __attribute__((unused)), my_bool set_blocking_mode,
     if (old_fcntl != vio->fcntl_mode)
       r = ioctlsocket(vio->sd,FIONBIO,(void*) &arg, sizeof(arg));
   }
+#ifndef __EMX__
+  else
+    r=  test(!(vio->fcntl_mode & O_NONBLOCK)) != set_blocking_mode;
+#endif /* __EMX__ */
 #endif /* !defined(__WIN__) && !defined(__EMX__) */
 #endif /* !defined (HAVE_OPENSSL) */ 
   DBUG_PRINT("exit", ("%d", r));