python: add 2.7.6 bottle.
libxml2: add bottle.
python3: add bottle.
Python 3 support for PySide and shiboken
libqglviewer: update 2.5.1 bottle.
pyside: add 1.2.1 bottle.
boost: update 1.55.0 bottle.
shiboken: add 1.2.1 bottle.