On the ra-svn-tuning branch: Eliminate > 50% of the ra_svn serialization time for 'svn log -v' reports.
On the ra-svn-tuning branch:
Eliminate > 50% of the ra_svn serialization time for 'svn log -v' reports.

* subversion/libsvn_ra_svn/marshal.c
  (STATIC_SVN_STRING): New macro.
  (changed_path_flags): New function providing pre-cooked protocol strings.
  (svn_ra_svn__write_data_log_changed_path): Add a quick code path.


git-svn-id: 438ac5d313a44e3fd44ad80d32c3b6ace2b8a9c1@1663297 13f79535-47bb-0310-9956-ffa450edef68

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