Add two properties to `media.model.Attachments.propmap`: `include` and `exclude`, which are aliases for `post__in` and `post__not_in`.

This allows you to instantiate a library that includes and/or excludes specific attachments by passing a single ID or an array of IDs.

Example usage:
{{{
wp.media({frame: 'post', library: {include: [414, 415]}}).open()
wp.media({frame: 'post', library: {include: 414}}).open()
wp.media({frame: 'post', library: {exclude: [414, 415]}}).open()
wp.media({frame: 'post', library: {exclude: 414}}).open()
}}}

Fixes #26587.

Built from https://develop.svn.wordpress.org/trunk@29759


git-svn-id: http://core.svn.wordpress.org/trunk@29531 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/js/media-models.js

@@ -1164,7 +1164,9 @@ window.wp = window.wp || {};
 			'perPage':   'posts_per_page',
 			'menuOrder': 'menu_order',
 			'uploadedTo': 'post_parent',
-			'status':     'post_status'
+			'status':     'post_status',
+			'include':    'post__in',
+			'exclude':    'post__not_in'
 		},
 		/**
 		 * @static
@@ -1211,6 +1213,12 @@ window.wp = window.wp || {};
 					props.orderby = defaults.orderby;
 				}
 
+				_.each( [ 'include', 'exclude' ], function( prop ) {
+					if ( props[ prop ] && ! _.isArray( props[ prop ] ) ) {
+						props[ prop ] = [ props[ prop ] ];
+					}
+				} );
+
 				// Generate the query `args` object.
 				// Correct any differing property names.
 				_.each( props, function( value, prop ) {