extract version from version.h
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53476 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
extract version from version.h
from API version in include/ruby/version.h.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53476 b2dd03c8-39d4-4d8f-98ff-823fe69b080e