A bz2-file doesn't contain information about the size of its
uncompressed content. Therefore it requires reading the whole file to
obtain the filesize.

Instead of having various function_exists checks all over the place,
this introduces the constants DOKU_HAS_GZIP and DOKU_HAS_BZIP. All
non-3rdparty parts of the code using gz* functions should now check if
zlib is actually available.

- put test comments in more appropriate spot
- move appending replacement line alongside its search/delete code

The changes should also:
- fix unlikely edge case when replacement line is the same as the
  old line (would have resulted in timeout)
- reduce memory footprint
- avoid applying string search beyond maxlines replacement limit

The code reading .bz2 compressed files did not correctly check for
possible read errors. In case of a corrupted file this could have led to
an infinite loop.

Thanks to Filippo Cavallarin from www.segment.technology for dicovering
this bug.

In an older version of PHP a file_exists() call would issue a warning
when the file did not exist. This was fixed in later PHP releases. Since
we require PHP 5.3 now, there's no need to supress any error here
anymore. This might even give a minor performance boost.

many PHPDocs
some unused variables
some dynamically declared variables declared

replace boolean conditional checks on possibly uninitialized vars with \!empty/empty/isset as appropriate

DokuWiki's page loading is intended to be filesystem agnostic. DOS line
endings in pages are supposed to be self healing. This behaviour was
broken in a change in 2006. As long as you edited pages through DokuWiki
only you never noticed the bug though.

Classes are loaded throug PHP5's class autoloader, all other
includes are just loaded by default. This skips a lot of
require_once calls.

Parser and Plugin stuff isn't handled by the class loader yet.

Ignore-this: 259cb5773c3144c6c706d87298dcf674

darcs-hash:20091020212338-7ad00-6bf1c5c403491f136a1c02af5ecd9f84d7227107.gz

This patch extends the config 'password' class to support a "_code" parameter

darcs-hash:20090119164809-f07c6-c136b559772610539bccb9e9c0191f6a973216ad.gz

darcs-hash:20081213090400-7ad00-4e21cd75978bb07513f32f5d750658e8d777c59e.gz

darcs-hash:20080823090003-7ad00-e3b2f2258bf794b62810f9fc51378bb9271441e3.gz

darcs-hash:20080408014339-f07c6-63870bfa4e45d05275cf46993bee62d61a6cc5a8.gz

darcs-hash:20080227221631-23886-1ce689e9616b6dd5d2cc55613b86ddff4e1808be.gz

darcs-hash:20080215105251-7ad00-b7ac1bfc0e2d1eccf079f4ff2f0db8876896b79d.gz

darcs-hash:20080118213300-7ad00-11a2b04c91c566ba2965bc548b94b8bf5b1bf5e5.gz