pysmfile: smfile language determined by file extension now
builder, dirscanner: replaced superconstructors with super()
builder: fixed for changes of conf.py
added __repr__() methods for all classes in conf,
re-added conftype member for Config
Merge branch 'pysmfile' of git.sft.mx:sftmake into pysmfile
Merge remote-tracking branch 'origin/pysmfile' into pysmfile
builder: fixes due to conf changes