Hide an ugly warning when compiling Subversion using the Windows 8.1 SDK:
Obtaining the actual Windows version (for comparison) is deprecated.

* subversion/libsvn_subr/sysinfo.c
  (svn_sysinfo___fill_windows_version): New function, extracted from...
  (system_info): ... this. Use memset instead of ZeroMemory as everywhere
    else.
  (win32_canonical_host,
   win32_release_name): Update caller.

* subversion/libsvn_subr/sysinfo.h
  (svn_sysinfo___fill_windows_version): Update caller.

* subversion/libsvn_subr/win32_crashrpt.c
  (includes): Add sysinfo.h.
  (write_process_info): Update caller. Properly print/convert unicode.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1568806 13f79535-47bb-0310-9956-ffa450edef68