CVS log for interchange/code/UI_Tag/global_value.coretag

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Fix incorrect license in headers GPL v2 -> GPL v2 "or later".  Update copyrights.

Fix incorrect license in headers GPL v2 -> GPL v2 "or later".  Update copyrights.

Big copyright and version number update to prepare for 5.3.2 release.

Header/license fix or Version update+minor formatting fix, or both

updated LINUXIA branch to 4.9 sources in order to use it as testbed again

* Major changes to the Interchange output model and UI.

* There will be more commits for menu data.

UI
-------

* Zeald's redesign of the UI layout is almost fully implemented. There
  are but a few pages that don't incorporate the new layout.

* Each page can have an entry in mv_metadata, which allows setting
  of page titles, display types, menus, and more via database setting.
  An editor is provided.

* Virtual UI pages are fully supported. This will allow catalog-specific
  UI settings to be transmitted to a catalog with simple database updates.
  Each page is simply an entry in mv_metadata.

* The second-level menu can be set either with the page class, as before,
  or in the page metadata with $Scratch->{second_menu}.

* There is a third-level menu callable via $Scratch->{third_menu}. There
  are few situations where the old "next_line" menu setting causes the
  third-level menu -- old menu files should be compatible but where possible
  the third-level menu is explicitly specified.

* [table-editor] and [tabbed-display] can now do tabs to the third-level
  menus. This provides a very seamless tabbed display that does not
  require a page access to change.

* Many changes made to pages to map output to the new template.

* New GPG encryption wizard to make setting up of encryption as close
  to painless as I can make it.

* Change to menu editor to incorporate better menu loading.

* New merge_metadata function allows management of new metadata when
  updating the UI.

* Many, many minor changes and visual improvements.

* A good deal of documentation about the metadata and table editor
  has been written, and those items should be committed soon. Many
  of the features are covered.

Core
-----
* Output of the parser is now sent to @Vend::Output, which allows remapping
  of the parser output before output by the Server module.

  There should be no difference in behavior by default.

  Each piece of output is pushed onto an array, and pointers
  are maintained as to the name of the output. The default if
  the output is not remapped is to go to the $Vend::OutputMap{''} space.

  When output is done in non-mapped mode, @Vend::Output is simply
  joined and sent.

  The behavior diffence comes if you use the Vend::Page::output_cat
  routine. It will output the value of a named space.

  You can map output with the ITL tag:

  	[output-to name=foo]

  To return to the default space, you use:

  	[output-to name=""]

  To return to the *previous* named space, use:

  	[output-to]

  That is not normally what is wanted, though.

  All of the above allows you to map pieces of a page to different named
  spaces and unpack them with the [unpack] tag.

  This is all perhaps easier illustrated than described -- the illustration
  is in the changes to the UI, which map output from the page code to the
  template.

	* The great tag breakout!

	* Almost all tags are now UserTag definitions. The only exceptions
	  are:

		and bounce goto if label or unless

    * New TagDir directive (default is VENDROOT/code) sets the
	  directory (or directories) which are searched for code definitions
	  set by UserTag and CodeDef.

	* New TagGroup directive establishes groups of ITL tags which can
	  be included.

	  	TagGroup :crufty "banner default ecml html_table onfly sql"

	  The default groups include :core, which contains all of the
	  ITL tags defined in 4.8/early 4.9. The groups are defined
	  in $Vend::Cfg::StdTags and can be undefined if desired
	  with "TagGroup :group".

	* New TagInclude directive allows inclusion of tags (or groups
	  of tags). If a tag is defined as a core tag (with a .coretag
	  or .tag or .ct extension) and is not included, it will not
	  be compiled and placed in the tag map. This is for all catalogs,
	  so if *any* catalog uses a tag it must be included.

	  Examples:

		# Include the base tags
	  	TagInclude :core

		# Not the commerce tags
		TagInclude !:commerce

		# But make sure item-list is included even though
		# it is in :commerce
		TagInclude item-list

		## Double negatives are honored
		TagGroup    :foo "bar !baz buz"
		## With the group above, the below is equivalent
		## to TagInclude !bar baz !buz
		TagInclude !:foo

    * New CodeDef directive allows the setting of filters,
	  order checks, FormAction, ActionMap, ItemAction,
	  and LocaleChange.

			## filters
			CodeDef  mixedcase Filter
			CodeDef  mixedcase Routine <<EOR
			sub {
				my $val = shift;
				## [filter mixedcase]mixed case[/filter]
				## outputs "MiXeD CaSe"
				$val =~ s/(.)(.)/\u$1\l$2/g;
				return $val;
			}
			EOR

			## order checks
			CodeDef  mixedcase OrderCheck
			CodeDef  foo  Routine <<EOR
			sub {
				my ($ref, $var, $val) = @_;
				return (1,$var) if $val eq 'bar';
				return (0,$var, "foo must be bar");
			}
			EOR

	   All work in catalog.cfg; LocaleChange and ItemAction are not
	   global. FormAction, ActionMap, and ItemAction directives
	   are equivalent to their CodeDef equivalents.