target/5563: [Cygwin] using a pointer named "end" consistently produces segfault in windows.

[Danny Smith]

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=g
cc&pr=5563

This is really a binutils problem isn't it.  In  ld/scripttempl/pe/sc,
line 132ff

  .endjunk ${RELOCATING+BLOCK(__section_alignment__)} :
  {
    /* end is deprecated, don't use it */
    ${RELOCATING+ end = .;}
    ${RELOCATING+ _end = .;}
    ${RELOCATING+ __end__ = .;}
  }

Danny