rtest_taylor bugs



I'm getting errors for rtest_taylor tests 75,76,77,78,79,80,81,82, and 84.
The problem seems to be that the function 'pow' is undefined. The 
hayat.lisp
function poly->ps calls pow. What's the story? 

Otherwise, the testsuite is OK with XP and SBCL 1.09. But with SBCL and 
XP, I'm only able to get Maxima to run from a mingw terminal.

BW