Merge of mysql-5.1-bugteam into mysql-5.5-bugteam.

CMakeLists.txt:
  Enable the maintainer mode if debug support is enabled.
  Does not cause it to be enabled if the user explicitly
  disabled the maintainer mode.

CMakeLists.txt

@@ -61,6 +61,8 @@ SET(BUILDTYPE_DOCSTRING
  
 IF(WITH_DEBUG)
   SET(CMAKE_BUILD_TYPE "Debug" CACHE STRING ${BUILDTYPE_DOCSTRING} FORCE)
+  SET(MYSQL_MAINTAINER_MODE ON CACHE BOOL
+      "MySQL maintainer-specific development environment")
   SET(OLD_WITH_DEBUG 1 CACHE INTERNAL "" FORCE)
 ELSEIF(NOT HAVE_CMAKE_BUILD_TYPE OR OLD_WITH_DEBUG)
   IF(CUSTOM_C_FLAGS)

config/ac-macros/maintainer.m4

@@ -8,7 +8,8 @@ AC_DEFUN([MY_MAINTAINER_MODE], [
     [AS_HELP_STRING([--enable-mysql-maintainer-mode],
                     [Enable a MySQL maintainer-specific development environment])],
     [USE_MYSQL_MAINTAINER_MODE=$enableval],
-    [USE_MYSQL_MAINTAINER_MODE=no])
+    [AS_IF([test "$with_debug" != "no"],
+      [USE_MYSQL_MAINTAINER_MODE=yes], [USE_MYSQL_MAINTAINER_MODE=no])])
   AC_MSG_RESULT([$USE_MYSQL_MAINTAINER_MODE])
 ])
 

configure.in

@@ -118,6 +118,13 @@ AC_SUBST(SHARED_LIB_MAJOR_VERSION)
 AC_SUBST(SHARED_LIB_VERSION)
 AC_SUBST(AVAILABLE_LANGUAGES)
 
+# Check whether a debug mode should be enabled.
+AC_ARG_WITH([debug],
+    AS_HELP_STRING([--with-debug@<:@=full@:>@],
+      [Enable various amounts of debugging support (full adds a slow memory checker).]),
+    [with_debug=$withval],
+    [with_debug=no])
+
 # Whether the maintainer mode should be enabled.
 MY_MAINTAINER_MODE
 
@@ -1689,10 +1696,6 @@ then
   DEBUG_OPTIMIZE_CXX=""
 fi
 
-AC_ARG_WITH(debug,
-    [AS_HELP_STRING([--with-debug], [Add debug code @<:@default=no@:>@])],
-    [with_debug=$withval],
-    [with_debug=no])
 if test "$with_debug" = "yes"
 then
   AC_DEFINE([DBUG_ON], [1], [Use libdbug])