GiNaC/ginac clifford.cpp clifford.h color.cpp color.h idx.cpp idx.h indexed.cpp indexed.h tensor.cpp tensor.h tinfos.h

[Christian Bauer]

Update of /home/cvs/GiNaC/ginac

Modified Files:
	clifford.cpp clifford.h color.cpp color.h idx.cpp idx.h 
	indexed.cpp indexed.h tensor.cpp tensor.h tinfos.h 
Log Message:
- color and clifford classes are quite functional now
- new "spinidx" class for dotted/undotted indices
- predefined spinor metric tensor (created by spinor_metric())