hierarchical_select 6.x-3.1

Changes since DRUPAL-6--3-0:

• #694850 by swentel: Minor PHP notice in hs_taxonomy.module
• Fixed #686580: PHP warning when importing configuration
• #708246 by reubidium: Warning occuring in hs_taxonomy when no vocabularies are available
• #689222 by rikvd: Check if array_smart_merge() function exists before defining it
• #656424 by Dmitriy.trt: Once you hit the dropbox limit, the dropbox gets reset
• #687170: HS Content Taxonomy: support for default value field setting
• #625862 by digi24: $form_state incorrectly passed by reference to hs_taxonomy_form_alter()
• #640534: Document CTools' $form_state['form_load_files'] compatibility
• #601500 by hefox & bibo: HS Taxonomy interaction with other modules (content_taxonomy, unhides taxonomy fields)
• #505090 by iv and myself: Term Permissions support for Hierarchical Select Taxonomy
• Fixed one case of #538022: JS alert: "Received an invalid response from the server." — when clean URLs are disabled and GET arguments are present
• #728712: HS Content Taxonomy: errors when save_lineage or dropbox are enabled/disabled
• - Cleanup of README.txt.
  - Added explanation for terms with multiple parents to the troubleshooting section of README.txt.
• #729174: Terms with multiple parents when "save lineage" is disabled: saves parent instead of term
• #744286: Forum selection no longer required when HS Taxonomy enabled
• Follow-up patch for #605110 by pacproduct: i18n compatibility: POST request is prefixed with language code, not actual language prefix