Merge pull request #14 from Ada15764/G4_XML_new

adding handlers for sphere and cutTubs and fixed compilation problem in ...
trapHandler
Added trap geometry xml
commit edfarina changes
Merge branch 'edfarina-uno'
Merge pull request #16 from clementhelsens/edfarina-uno

commit edfarina changes
Merge remote branch 'upstream/master'
added cgs boolean solid
fixing conflicts in edoardo uno branch before merging
Merge pull request #18 from clementhelsens/edfarina-uno-fix2

Edfarina uno fix2
renamed wrong file
Added extruded solids and modiications
Added extruded solids and modiications
Merge pull request #19 from edfarina/two

Two
adding package loader