Merge branch remove-virtual

Merge branch remove-virtual

Updating a6ceb9a..f423189
Fast-forward
Squash commit -- not updating HEAD
 xml-tree-builder.cpp |    2 +
 xml-tree-inc.hpp     |   54 ++++++-
 xml-tree.cpp         |  406 +++++++++++++++++++++++++-------------------------
 xml-tree.hpp         |    7 +-
 4 files changed, 258 insertions(+), 211 deletions(-)

commit f423189f0f02a6649090256d1faa0748c29cb2e7
Author: Kim Nguyễn <kn@lri.fr>
Date:   Tue May 29 08:09:47 2012 +0200

    More inlining

commit d87421ea4d344a29eabbd6ecd25c38b828782a45
Author: Kim Nguyễn <kn@lri.fr>
Date:   Tue May 29 08:08:33 2012 +0200

    Replace abstract static_sequence by an array of static_sequence_sdarray
    (avoids calling virtual methods).

commit 6ccf015bb473e810c3f7f91f1f85f21044ed2c0b
Author: Kim Nguyễn <kn@lri.fr>
Date:   Tue May 29 08:07:51 2012 +0200

    Revert to old printing function