• win32/win32.c (set_pioinfo_extra): use more reliable way to search
  the position of pioinfo of VC14, and also support debug library of it.
  ed by davispuh AT gmail.com
  [ruby-core:76644] [Bug ]
  this fixes also [Bug ]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55792 b2dd03c8-39d4-4d8f-98ff-823fe69b080e