merge revision(s) 58287: [Backport #13411]
configure.in: rpath with OPTDIR * configure.in: add rpath flags which is needed for OPTDIR as well as -L options, when it is given. [ruby-dev:50065] [Bug #13411]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@59544 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 58287: [Backport #13411]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@59544 b2dd03c8-39d4-4d8f-98ff-823fe69b080e