merge revision(s) r48886: [Backport #10210]
* configure.in (rb_cv_binary_elf): get rid of -e option of cat which is not available on BusyBox, use tr instead. [ruby-core:64824] [Bug #10210]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@49470 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) r48886: [Backport #10210]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@49470 b2dd03c8-39d4-4d8f-98ff-823fe69b080e