Re: thread safe

Attached is my first draft of the new svn_config_dup() API.

* it does not return an svn_error_t but the duplicate hash directly. The
only API call that could return an error is svn_config_create() but that
API also returns SVN_NO_ERROR unconditionally (for now at least).
* no error checking is done for now, will add some checks for failed
memory allocations later.
* hash keys are duplicated as well (allocated in the passed pool)

Please have a look at this. I think it's correct, at least my first
tests show that it works and solves my problem in TSVN with multiple
threads as well.

be back tomorrow...

Stefan

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