For issue #4371 ("Subversion requires Serf 1.2.1")...
For issue #4371 ("Subversion requires Serf 1.2.1")...

* subversion/libsvn_ra_serf/ra_serf.h
  Bump version check for Serf library to 1.2.1.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1489116 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion