ad 5.x-1.6

New features:

• Geotargeting, with Ad GeoIP project.
• #250289: new jQuery method for displaying advertisements.
• #177885: Drupal input filters can optionally be applied when displaying advertisements.
• #233568: can set per-ad-type default permissions for ad owners
• #274297: API: allow modules to define their own ad display variables
• #220817: support installations that are using symbolic links
• API: introduce adserve hooks: adserve_init_text, adserve_exit_text, and adserve_select.

Bug fixes include:

• #271912: gracefully report when memcache is not installed
• #271477: don't start id with a number
• #288489: add missing argument 2 for variable_get()
• #270808: set default value when calling variable_get()
• #242738: XHTML-Strict compliance, use onclick handler instead of target (patch thanks to Daniel Kudwien, aka 'sun')
• #269808: be sure variable is an array before walking with foreach