- fix synax error (bnc#657354)

- update to 1.6.15:
User-visible changes:
* hide unreadable dirs in mod_dav_svn's GET response (r996884)
* make 'svnmucc propsetf' actually work (r1005446)
* limit memory fragmentation in svnserve (r1022675)
* fix 'svn export' regression from 1.6.13 (r1032970)
* fix 'svn export' mistakenly uri-encodes paths (issue #3745)
* fix server-side memory leaks triggered by 'blame -g' (r1032808)
* prevent crash in mod_dav_svn when using SVNParentPath (r1033166)
* allow 'log -g' to continue in the face of invalid mergeinfo (r1028108)
* filter unreadable paths for 'svn ls' and 'svn co' (r997026, -070, -474)
* fix abort in 'svn blame -g' (issue #3666)
* fix file handle leak in ruby bindings (issue #3512)
* remove check for 1.7-style working copies (issue #3729)
Developer-visible changes:
* improve some swig parameter mapping (r984565, r1035745)
* improve test accuracy over dav (r991534, r877814)
* create fails.log for test runs (r964349)
* improve detection of 'svnversion' when buildling (r877219, et al)
* don't violate API layering in dumpstream logic (issue #3733)
* don't report working copy installs as switched (r1033921)
- project website changed from subversion.tigris.org to subversion.apache.org