subversion: fix for Security Advisory CVE-2013-4277

subversion: fix for Security Advisory CVE-2013-4277

Svnserve in Apache Subversion 1.4.0 through 1.7.12 and 1.8.0 through
1.8.1 allows local users to overwrite arbitrary files or kill arbitrary
processes via a symlink attack on the file specified by the --pid-file
option.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-4277

(From OE-Core rev: e0e483c5b2f481240e590ebb7d6189a211450a7e)

Signed-off-by: Yue Tao <Yue.Tao@windriver.com>
Signed-off-by: Roy Li <rongqing.li@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>