Some auth backends allow special chars like whitespaces in user and group
names. This made problems with the existing ACL checks and ACL manager.
This patch makes the ACL system work with these cases by (url)encoding all
special chars below 128.

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This should fix a problem making sweepNS() never work

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Fix umask bug and do a code cleanup of chmod/mkdir usage so set the correct permissions, this should also fix problems with dokuwiki making setuid files on some umasks.

  * Don't set the umask() anymore, this is not good form and we don't really know what is it in the old code anyway as it was not done properly.
  * Retire the dmask config option introduce 2 new ones called fmode and dmode, this is more in line with posix and should make more sense.
  * Use chmod for setting the correct permissions but only if it's needed.
  * Set changing of permissions off by default as i should work properly in most Apache setups without and it does not make sense on windows anyway.

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There's been a few more languages added, namely ColdFusion, T-SQL,
Robots.txt, AutoIT and Java 5, and a couple of bug fixes.

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This patch adds optional hierarchical breadcrumbs. This was discussed last
december in http://www.freelists.org/archives/dokuwiki/12-2005/msg00112.html
and followups. Many people where in favour of this.

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The functions utf8_to unicode and unicode_to_utf8 didn't work correctly
with some 3 and 4 byte strings. This exchanges those functions against
two more sophisticated ones. It also adds unit testing for them.

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