Fix request #4514: Problems with commit email - no username and email address

Even when LDAP was configured to do an authenticated bind, the perl connector
used by subversion post commit code (send email and gather svn log info) was
not doing authenticated bind.

Change-Id: I8fb34b1705423948745b5ba95fc35781dc86a6c5
Merge commit 'refs/changes/64/664/1' of http://gerrit.tuleap.net/tuleap into HEAD

* http://gerrit.tuleap.net/tuleap:
  Fix request #4514: Problems with commit email - no username and email address

Change-Id: Idbdf03f288b84e38501fc0670e3faf19ad56bbc6
This is Tuleap 6.2.99.38

Change-Id: I306ea387ca40dba9414b1cdb11b1cc145223d51f