use "default" plugin configuration by default, not "none".

enable maria in the default plugin configuration

config/ac-macros/plugins.m4:
  typo in comment fixed.
  change default plugin configuration to be "default" not "none".
  don't print default plugin configuration in the help text (as it's "default" anyway)
configure.in:
  use "default" plugin configuration by default, not "none"
storage/maria/plug.in:
  enable maria in the default plugin configuration

config/ac-macros/plugins.m4

@@ -280,7 +280,7 @@ dnl ---------------------------------------------------------------------------
 dnl Macro: MYSQL_CONFIGURE_PLUGINS
 dnl
 dnl SYNOPSIS
-dnl   MYSQL_PLUGIN_DEPENDS([name,name...])
+dnl   MYSQL_CONFIGURE_PLUGINS([name,name...])
 dnl
 dnl DESCRIPTION
 dnl   Used last, emits all required shell code to configure the plugins
@@ -735,13 +735,13 @@ dnl   Emits shell script for checking configure arguments
 dnl   Arguments to this macro is default value for selected plugins
 
 AC_DEFUN([_MYSQL_CHECK_PLUGIN_ARGS],[
- __MYSQL_CHECK_PLUGIN_ARGS(m4_default([$1], [none]))
+ __MYSQL_CHECK_PLUGIN_ARGS(m4_default([$1], [default]))
 ])
 
 AC_DEFUN([__MYSQL_CHECK_PLUGIN_ARGS],[
  AC_ARG_WITH([plugins],
 AS_HELP_STRING([--with-plugins=PLUGIN[[[[[,PLUGIN..]]]]]],
-               [Plugins to include in mysqld. (default is: $1) Must be a
+               [Plugins to include in mysqld. Must be a
                 configuration name or a comma separated list of plugins.])
 AS_HELP_STRING([],
                [Available configurations are:] dnl

configure.in

@@ -2387,7 +2387,7 @@ MYSQL_STORAGE_ENGINE(partition, partition, [Partition Support],
 
 dnl -- ndbcluster requires partition to be enabled
 
-MYSQL_CONFIGURE_PLUGINS([none])
+MYSQL_CONFIGURE_PLUGINS([default])
 
 # Only build client code?
 AC_ARG_WITH(server,

storage/maria/plug.in

 MYSQL_STORAGE_ENGINE(maria,, [Maria Storage Engine],
-        [Crash-safe tables with MyISAM heritage], [max,max-no-ndb])
+        [Crash-safe tables with MyISAM heritage], [default,max,max-no-ndb])
 MYSQL_PLUGIN_DIRECTORY(maria,  [storage/maria])
 MYSQL_PLUGIN_STATIC(maria,     [libmaria.a])
 # Maria will probably go first into max builds, not all builds,