Add X-SVN-Revision header and remove X-SVN-SHA256-Info header.
Add X-SVN-Revision header and remove X-SVN-SHA256-Info header.

* tools/hook-scripts/commit-email.rb
  (make_header):
  - Remove X-SVN-SHA256-Info header.
  - Add X-SVN-Revision header.
  (x_revision): Add.
  (x_sha256): Remove.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@864577 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion