Fix Windows build for neon 0.26.x.
Fix Windows build for neon 0.26.x.

* build/generator/gen_win.py
  (get_win_defines): Define SVN_NEON_0_26 as appropriate.



git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@861367 13f79535-47bb-0310-9956-ffa450edef68

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