Use dedicated views cache table

Views currently uses the general-purpose cache table: $data = cache_get("views_with_inline_args:$locale", 'cache');. It would be much better for performance if it had its own cache table. It would mean making a new cache table in views.install:

      db_query("CREATE TABLE {cache_views} (
        cid varchar(255) NOT NULL default '',
        data longblob,
        expire int NOT NULL default '0',
        created int NOT NULL default '0',
        headers text,
        PRIMARY KEY (cid),
        INDEX expire (expire)
      ) /*!40100 DEFAULT CHARACTER SET UTF8 */ ");

and updating all cache_* functions: $data = cache_get("views_with_inline_args:$locale", 'cache');.

The reason it would perform better is because of the table locking that goes on when the cache is written to. Basically, any time you use cache_set, the table gets locked. This means that anonymous users can't get their page cache hits served in that time, under the current scheme.