GiNaC/ginac clifford.cpp clifford.h color.cpp color.h tensor.cpp tensor.h

[Christian Bauer]

Update of /home/cvs/GiNaC/ginac

Modified Files:
	clifford.cpp clifford.h color.cpp color.h tensor.cpp tensor.h 
Log Message:
- dirac_trace() handles arbitrary expressions (even unexpanded), including
  gamma5
- implemented color_trace()
- eps0123() creates a 4-dimensional epsilon tensor without checking the
  indices (so they may be D-dimensional); this may become a different class
  soon, but for now all the implemented properties of the standard epsilon
  tensor also apply to eps0123