Support return in nested functions.
do not export guessAlg(q) and guessPade(q)
Another common factor fix.
Cancel common factors during reconstruction.
Fix comment spelling.
fix bad comments in tensor.spad
new categories, domains and output routines for tensor products of free modules.
Correct version of revision 715.
Do not attempt to remember command line parameters if sbcl can not do this.
Makefile fixes.