trac 15382

Macaulay Resultant of Multivariate Polynomials
improve performance of macaulay_resultant
some fixes to performance issues
minor changes
finished implementing minor performance improvements. There is still a failed test to take care of.
removed all usage of actual monomials, only using degree-lists now.
minor changes to comments
trac 15382

Macaulay Resultant of Multivariate Polynomials
improve performance of macaulay_resultant
some fixes to performance issues
minor changes
finished implementing minor performance improvements. There is still a failed test to take care of.
removed all usage of actual monomials, only using degree-lists now.
minor changes to comments
fix or workaround for no axes in log scale when ticks are off

The main culprit seems to be the command bbox_extra_artists=[] while
*saving* the figure! So, the fix (or perhaps it is a workaround in
some bug in matplotlib) is to set this option only if it is nonempty.
moved macaulay_resultant to MPolynomialRing_generic class; deleted macaulay_resultant.py
Merged all.py to fix conflict
deleted macaulay_resultant.py
fixed failed doctest
fixed another doctest in macaulay_resultant