is_* WP_Query methods. Props mdawaffe. fixes #14494

git-svn-id: https://develop.svn.wordpress.org/trunk@15531 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/deprecated.php

@@ -2535,3 +2535,24 @@ function is_term( $term, $taxonomy = '', $parent = 0 ) {
 	return term_exists( $term, $taxonomy, $parent );
 }
 
+/**
+ * Is the current admin page generated by a plugin?
+ *
+ * @since 1.5.0
+ * @deprecated 3.1
+ * @deprecated Use global $plugin_page and/or get_plugin_page_hookname() hooks.
+ *
+ * @global $plugin_page
+ *
+ * @return bool
+ */
+function is_plugin_page() {
+	_deprecated_function( __FUNCTION__, '3.1'  );
+
+	global $plugin_page;
+
+	if ( isset($plugin_page) )
+		return true;
+
+	return false;
+}