Patched up to: http://drupal.org/node/71264
TODO: fix vocabulary-node association: wrong node types??
TODO: fix GLOBALS variables Name (use standard notation)
- import: checking if term already exists using name and hierarchy
- import: using file_read_contents() instead of using file handlers
- export: default filename is "taxonomy_VocabularyName.xml"
- export: XML is more human-readable: added indents and line feed
- export: using $_SERVER[] superglobal for browser checking
- displayed information on import process
- displayed warning if non vocabulary is present
- Fixed some help text (export)