Get rid of the "net retry count" difference which

is not needed any more with current versions of FreeBSD.
(Entries 52410 and 52412 in the Bug DB)

That change is based on Dan Nelson replying on the
FreeBSD mailing list, freebsd-questions@freebsd.org
in a thread running from 2010-Apr-29 to 2010-May-1 titled
     "Need info about FreeBSD and interrupted system
      calls for MySQL code"

Also, ensure the cmake settings correspond to the autotools
ones: Add "HAVE_BROKEN_REALPATH" to cmake.


cmake/os/FreeBSD.cmake:
  With current versions of FreeBSD, threading is not done on
  the user-level any more, so the huge "net retry count"
  is not needed any more.
  However, it is still being kept as a comment for now,
  so that it can be re-activated should the need arise.
  
  In addition, set "HAVE_BROKEN_REALPATH" to completely
  mirror the autotools path.
configure.in:
  With current versions of FreeBSD, threading is not done on
  the user-level any more, so the huge "net retry count"
  is not needed any more.
  This definitely holds for FreeBSD version 6 and up.
  
  Adapt the informational messages to the path taken.

cmake/os/FreeBSD.cmake

 
-# Copyright (C) 2010 Sun Microsystems, Inc
+# Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
 # 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -15,6 +15,9 @@
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA 
 
 # This file includes FreeBSD specific options and quirks, related to system checks
-#Legacy option, maybe not needed anymore , taken as is from autotools build
-ADD_DEFINITIONS(-DNET_RETRY_COUNT=1000000)
 
+# Should not be needed any more, but kept for easy resurrection if needed
+#   #Legacy option, maybe not needed anymore , taken as is from autotools build
+#   ADD_DEFINITIONS(-DNET_RETRY_COUNT=1000000)
+
+ADD_DEFINITIONS(-DHAVE_BROKEN_REALPATH)

configure.in

 dnl -*- ksh -*-
 dnl Process this file with autoconf to produce a configure script.
 
-# Copyright (C) 2008-2009 Sun Microsystems, Inc
+# Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -1295,14 +1295,22 @@ case $SYSTEM_TYPE in
     fi
     ;;
   *freebsd*|*dragonfly*)
-    AC_MSG_WARN([Adding fix for interrupted reads])
+    dnl These dependencies have not really been checked for some time
     OSVERSION=`sysctl -a | grep osreldate | awk '{ print $2 }'`
-    if test "$OSVERSION" -gt "480100" && \
+    if test "$OSVERSION" -gt "600000"
+    then
+       # Post user-level threads, MYSQLD_NET_RETRY_COUNT is not needed any more
+       AC_MSG_WARN([Adding fix for broken realpath])
+       CFLAGS="$CFLAGS -DHAVE_BROKEN_REALPATH"
+       CXXFLAGS="$CXXFLAGS -DHAVE_BROKEN_REALPATH"
+    elif test "$OSVERSION" -gt "480100" && \
        test "$OSVERSION" -lt "500000" || \
        test "$OSVERSION" -gt "500109"
     then
+       AC_MSG_WARN([Adding fix for interrupted reads])
        CXXFLAGS="$CXXFLAGS -DMYSQLD_NET_RETRY_COUNT=1000000"
     else
+       AC_MSG_WARN([Adding fix for interrupted reads and broken realpath])
        CFLAGS="$CFLAGS -DHAVE_BROKEN_REALPATH"
        CXXFLAGS="$CXXFLAGS -DMYSQLD_NET_RETRY_COUNT=1000000 -DHAVE_BROKEN_REALPATH"
     fi