Certain tests have empty structs or classes.
This encounters a bug with clang: http://llvm.org/bugs/show_bug.cgi?id=16764
This is fixed in later versions of clang, but not the version
currently bundled with Mavericks and XCode 5
Fixed problems with insert() and unshift() functions in std::vector for ruby.
Updated Ruby documentation.
Improved swig_assert.rb.
Added "second" singleton to std_pair in ruby.
Modified two tests to follow the new STL stuff.
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@9721 626c5289-ae23-0410-ae9c-e8d60b6d4f22