Memory, style, and documentation followups to r25140.
Memory, style, and documentation followups to r25140.

Suggested by: dlr

* subversion/libsvn_repos/log.c
  (send_change_rev): Move doc string to the function declaration.
  (get_combined_rangelist): Clarify doc string.  Use a subpool for temporary
  allocations.
  (get_merge_changed_rangelist): Add comments.  Fix initial array size.
  (send_child_revs): Clarify doc string.  Use a subpool for temporary
  allocations.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@865294 13f79535-47bb-0310-9956-ffa450edef68

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