Use the latest supported OpenSSL 1.0.2 release

This is for AppVeyor only.  Note, there's no intention to repackage this
hook for Windows currently.  This just to restore the Windows CI/CD
builds for any futuer work we may do.

.appveyor.yml

@@ -4,8 +4,8 @@ image:
   - Visual Studio 2013
 
 install:
-  - appveyor DownloadFile https://slproweb.com/download/Win32OpenSSL-1_0_2p.exe
-  - Win32OpenSSL-1_0_2p.exe /sp- /silent /verysilent /suppressmsgboxes '/DIR=C:\OpenSSL-Win32'
+  - appveyor DownloadFile https://slproweb.com/download/Win32OpenSSL-1_0_2r.exe
+  - Win32OpenSSL-1_0_2r.exe /sp- /silent /verysilent /suppressmsgboxes '/DIR=C:\OpenSSL-Win32'
   - appveyor DownloadFile http://download.qt.io/archive/qt/5.5/5.5.1/single/qt-everywhere-opensource-src-5.5.1.7z
 
 build_script: