GiNaC/ginac basic.cpp ex.h normal.cpp

[Richard Kreckel]

Update of /home/cvs/GiNaC/ginac

Modified Files:
	basic.cpp ex.h normal.cpp 
Log Message:
* ex.h: add docu.
* normal.cpp: make sqrfree_yun() static.
* basic.cpp (compare): slightly clarify syntax.