Description:
------------
svn_mkdir should return TRUE on successful creation of 
directory, or FALSE otherwise.

However, svn_mkdir assumes that the mkdir will be done on a 
URL as opposed to a working copy. The "info" struct 
(svn_commit_info_t **) does not get set if the mkdir is done 
on a working copy, as it does not commit the changes 
immediately, but rather adds the changes to be commited (via. 
svn_client_add in the SVN client lib)

The patch below resolves the issue of not returning a 
boolean, but another patch might be required in the case of 
committing to a URL.

Reproduce code:
---------------
if(!svn_mkdir("/some/working/copy/path"))
{
	echo "Could not create directory";
}


Patch to remove assumption of commit and URL instead of working copy at http://pastebin.ca/2011999

Expected result:
----------------
FALSE if the directory exists, or the mkdir fails for another 
reason. TRUE if the directory is successfully created.

Actual result:
--------------
svn_mkdir always returns FALSE if the svn_mkdir is on a 
working copy directory.