* ext/io/console/extconf.rb: fix gem build failure on Windows.
only win32_vk.inc is included in the gem and no dependencies for
the header, so that gperf will not be mandatory.
[ruby-core:72453] [Bug #11866]
* ext/io/console/io-console.gemspec: include depend file and
win32_vk header.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53266 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
nobu