Before this patch with a .htaccess file on a higher level in the
hierarchy with "Satisfy Any" it has been possible that the directory
protection didn't work as expected.

This was broken in 3a48618a

as discussed at
http://www.freelists.org/post/dokuwiki/tokenizer-cmd-in-indexer,1

This avoids having the blowfish encrypted pass stored together with the
decryption key on the same server.

When a plugin is installed in the wrong directory, the class loading
will fail. This patch tries to find the correct directory from the
plugin.info.txt (using the base key) and give a hint to the user on how
to fix this.

Make interwiki links match with every other icon-link: need 1px top and bottom padding or else the icons' top and bottom pixel rows get cut off.

Now the indexer is directly called instead of duplicating a large part
of the indexer code.

This merges the INDEXER_PAGE_ADD and INDEXER_METADATA_INDEX events and
introduces the new string keys 'page', 'body' and 'metadata' in the
event data. All plugins that use INDEXER_PAGE_ADD need to be adjusted to
use the key 'page' instead of 0 and 'body' instead of 1.