Merge pull request #9 from balazsgrill/experimental

Experimental
Added SELECTB instruction
L4 to L3 compilation step: integrate program library models to a
self-contained model (with some exceptions, like origins and
instructions)
VariableParameterKind in EModel
variableKind
Versions
L3ToL2 continued
POM versions updated
Special type for labels instead of null
All integer literals have a type definition
Parser includes comment content into description
"var" parameters are automatically referred by pointer
generic model editor reloads resource when changed outside the editor