Ruby » Ruby master

merge revision(s) 48609: [Backport #10449] [Backport #11651]

    * compile.c (iseq_compile_each): remove duplicated line event.
      [Bug #10449]

    * test/ruby/test_settracefunc.rb: add and fix tests.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@52640 b2dd03c8-39d4-4d8f-98ff-823fe69b080e