fix propagation mousewheel events if modifiers are pressed.
(eg. Alt Ctrl ect.)
fix handling of removed objects and some messages
introduce ftgl for text rendering
minor cleanup for text
even more minor cleanup
use boost::signals2 instead of outdated boost::signals
minor cleanup
link samples statically  if static lib is build
fix some rendering issues with 3D text
use boost uBlas for basic vector algebra
make API FTGL-independent
Merge branch 'master' into boost_math
have a switch to disable shared build
remove unused light from sample1
Merge branch 'master' into boost_math
don't statically link the OpenGL libs
have an twoSideRender option in SGLMetaObj
Don't recompute axis lables is not needed
have a SGLFlMetaObj
some cleanup in the texture system