make/cli: When importing the handbook, query for all pages rather than the first 100.

This caused it to not "see" the posts > 100 and as a result create endless duplicates (over 8,000!) of the pages every 15 minutes.

See wp-cli/handbook#567


git-svn-id: https://meta.svn.wordpress.org/sites/trunk@14468 74240141-8908-4e6f-9713-ba540dce6ec7

Author: dd32

wordpress.org/public_html/wp-content/plugins/wporg-cli/inc/class-markdown-import.php

@@ -13,7 +13,7 @@ class Markdown_Import {
 	private static $nonce_name = 'wporg-cli-markdown-source-nonce';
 	private static $submit_name = 'wporg-cli-markdown-import';
 	private static $supported_post_types = array( 'handbook' );
-	private static $posts_per_page = 100;
+	private static $posts_per_page = -1;
 
 	/**
 	 * Register our cron task if it doesn't already exist