Following up on r1571499 and r1571500, make a symbol static on all platforms except Windows and add a huge comment explaining why it should remain public on Windows.
Following up on r1571499 and r1571500, make a symbol static on all platforms
except Windows and add a huge comment explaining why it should remain public
on Windows.

* subversion/libsvn_subr/ctype.c
  (svn_ctype_table_internal): Make static on all platforms except Windows.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1571524 13f79535-47bb-0310-9956-ffa450edef68

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