api 7.x-1.8

Changes since the 7.x-1.7 release -- note that you'll need to run update.php and then run cron until affected files are reparsed, to see some of the changes:

Bug fixes

- When a duplicate @defgroup is detected during parsing, the affected files now are marked for reparse at the next cron run. Issue: #2310153: When duplicate @defgroup is detected, file should be requeued
- Classes (and other items) whose doc blocks contained a @defgroup statement were not being saved properly. Now they are. Issue: #2402361: Notice in parser.inc for classes with malformed class doc block

Functionality enhancements

- Added "references" for constants ("35 functions use THIS_CONSTANT"). Issue: #2304395: Keep track of references for constants
- Added alterInfo() methods to the list of functions/methods that are recognized as invocations of "alter" hooks. Issue: #2304435: Another way to invoke hooks: alterInfo() method calls
- Improved Solr search integration. Issue: #2191343: Figure out Solr on api.drupal.org and then deploy
- Made it possible for an ingroup topic to have sub-topics. Issue: #2309179: Topics within topics are not working right
- @Event documentation tag is treated as @ingroup events, so that event constants are listed on the Events topic. Issue: #2393631: Treat @Event like @ingroup events

User interface

- Reordered information on API item pages and made them more consistent. Issue: #2324363: Move related topics next to See Also