* lib/mkmf.rb (create_makefile): sort lists of source and object
files in generated Makefile, unless given by extconf.rb.
[Fix GH-1367]
Without sorting the list of object files explicitely, its order is
indeterministic, because readdir() is also not deterministic.
When the list of object files varies between builds, they are
linked in a different order, which results in an unreproducible
build.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55265 b2dd03c8-39d4-4d8f-98ff-823fe69b080e