api 7.x-1.0

First official 7.x version of the API module! If you are running the 6.x version of the API module, read the documentation on how to upgrade; if you are installing for the first time, read the installation documentation. Both are at: http://drupal.org/node/425940

The 7.x branch of the API module has many bugs fixed and many new features added since the 6.x version. Highlights:
- The administrative interface is better organized and hopefully clearer.
- Branches, PHP function branches, and projects are now separated in the database and in the administrative interface.
- Cross-branch and cross-project linking and searching are more sensible.
- You can specify how often to check branches and PHP function branches for updates, and these updates are done using the Drupal queue system.
- Views integration has been added.
- The search auto-complete uses Drupal Core autocomplete instead of an obsolete jQuery plugin -- which means it functions in a slightly different manner, but is more accessible, will work with large API sites (such as those indexing all of contrib), and we don't have to maintain this obsolete plugin.
- There is more cross-linking and there are more "reference" pages (functions that call this function etc.).
- Efficiency has been improved in many places in the code, via the use of profiling.
- It's compatible with SQLite and PostgreSQL.