verconf.h.tmpl: rename

* template/verconf.h.tmpl: rename from .in since this is an erb
  template file, but not for config.status.

* common.mk (verconf.h): rename the dependent.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44446 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
mkconfig.rb: prefer unexpanded values

* tool/mkconfig.rb: prefer configured values than overriding
  values for RUBY_INSTALL_NAME and RUBY_SO_NAME when expanded
  results are same.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44447 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
expand-config.rb: expand config values

* tool/expand-config.rb: expand config values, extracted from
  win32/Makefile.sub.

* win32/Makefile.sub (ruby_pc): use tool/expand-config.rb script.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44448 b2dd03c8-39d4-4d8f-98ff-823fe69b080e