Ruby » Ruby master

configure.in: unexpand exec_prefix etc

• configure.in: unexpand arch sitearch and exec_prefix values, so
  directly specified bindir, libdir, rubyprefix, etc can be properly
  substituted. [ruby-core:52296] [Bug #7860]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39267 b2dd03c8-39d4-4d8f-98ff-823fe69b080e