CVS log for interchange/code/Filter/next_sequential.filter

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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.

* Add Stefan's suggested Visibility modification for CodeDef options.
  By default the visibility is public.

  It wants something like:

  		codedef:JavaScriptCheck

  Will return all public Descriptions.

  		codedef:JavaScriptCheck:private         -- return public and private.
  		codedef:JavaScriptCheck:private,admin   -- return public,private,admin

  If Visibility is "with Foo::Bar", it checks to see if $Foo::Bar::VERSION
  is true and returns the option if it is.

* Create routine to automatically select Routine for certain type of
  CodeDef. Currently there are many separate methods of doing that.
  This one prefers local over global, and is called with:

  	   codedef_routine($type, $name);

  For instance, codedef_routine('OrderCheck', 'multistate') will
  return $Vend::Cfg->{CodeDef}{OrderCheck}{multistate} if it exists,
  otherwise returns $Global::CodeDef->{OrderCheck}{multistate}.

* Modify Form.pm to use this for JavaScriptCheck. More will be
  added.

* Modify filters to add private Visibility for non-mainstream filters.

* Modify meta editor to use this.

* Add descriptions to filters. Some descriptions for trivial, obsolete,
  or very complex filters were left commented out to not clutter a
  filter list with garbage.

* Fix codedef:foo options callout to not be case sensitive.

* Sort codedef:foo return lists by label.

* The great filter breakout!

* All filters are now CodeDef definitions in code/Filter/*.

* Besides plain move from Interpolate.pm, changes made to Filter/* include:

	* Adding/fixing header/license/cvsid line (all files)
  * Indenting (where needed)
  * Lowercasing output html (where needed)

* Changes to Interpolate.pm:

  * Removed whole %Filter = ( ... )


I tested everything with the new eg/pcode script, and tried re-starting
Interchange and running few filters on test page. Seems OK.

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

* Add new filter, "next_sequential". Allows selection of a next-sequential
  value based on a field (and qualified by a field).

  [filter op="next_sequential.survey_q.sort"][cgi sort][/filter]

  will:

  	1. Return the existing value if present.
	2. If existing value is blank, return max + 1 in the sort field,
		i.e. equivalent to:

			SELECT sort FROM survey_q
			ORDER BY sort DESC
			LIMIT 1

  If another argument of a field name is passed, i.e.

	  filter => 'next_sequential.survey_q.sort.sel',

  then you get:

			SELECT sort FROM survey_q
			WHERE sel = '[cgi sel]'
			ORDER BY sort DESC
			LIMIT 1

  This allows a next-sequential numbering for things that need it.

  Developed to support general-purpose survey UI for Ton's excellent
  product rating system.

* Profile "process_filter" updated to support this -- it had no ability
  to employ database entries in filters before, which could have been
  a maddeningly subtle problem with other people's attempts at such
  things.