wordpress_import 6.x-2.2

New feature:
#998286: Implement username autocomplete when user count is over 30, to avoid huge select lists when mapping Wordpress authors to Drupal users.

Bug fixes:
#997824: Adjust directory creation for wxr files.
#936030: Fix form validation for user creation.
#757418: Fix possibly uninitialized variables and implement Drupal coding standards compliance (using Coder module)
#716502: Remove pass-by-reference function argument for PHP 5.3 compatibility
#778750: Use $base_path when constructing local image URL