More scalability goodness:
Set the accept() backlog parameter to a higher value.

* subversion/svnserve/svnserve.c
  (ACCEPT_BACKLOG): new tuning knob
  (main): use it

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1523491 13f79535-47bb-0310-9956-ffa450edef68