Mostly revert r1716575, keeping just the comment in apply_textdelta.
Mostly revert r1716575, keeping just the comment in apply_textdelta.

* subversion/libsvn_ra_serf/commit.c
  (close_file): Revert r1716575 request scheduling change.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1716742 13f79535-47bb-0310-9956-ffa450edef68

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