More thue() troubles in master/2.5.5 after the roots patch

[Georgi Guninski <guninski@guninski.com>]

Confirming that the yesterday bug is fixed
in master.

This appears an ``issue'' to me on today master
and 2.5.5

? F=(2*x^3+2*y^3)^3*(3*x+3*y)^3;th=thueinit(subst(F,y,1),1);so=thue(th,subst(subst(F,x,2),y,1))
%23 = [[2, 1], [1, 2]]
? subst(subst(F,x,-2),y,-1)
%24 = 4251528
? subst(subst(F,x,2),y,1)
%25 = 4251528
? %25==%24
%26 = 1

[-2,-1] and the like are missing IMHO.