Upgrade to Pynac-0.7.10

@kiwifb

In the new version:

remove static PyObjects; (Upgrade to Pynac-0.7.8 #23134)
fix segmentation fault with coefficients() (Doctest: segmentation fault with coefficients() on symbolic expressions #23545)
fix compile error --with-giac=yes
fix tgamma/lgamma return types
(real^m)^(1/n) --> abs(real)^(m/n), m even, m/n integer (Doctest: Immediate simplifications of symbolic powers #14305)
fix add::conjugate() (Doctest: Conjugate does not distribute over a sum #23135)
fix is_real(zeta(real))
negative symbolic domain from assume(sym<0) (Doctest: x.is_negative() when assuming x < 0 #21973)
add missing calls to set_domain in symbol constructors (Cache assumptions and only send to Maxima when needed #23138)
implement add.info(negative)
exact comparison of overall_coefficients
internal LONG numeric; nice speedup in some parts
fast internal in-place arithmetic operators
obsolete some internal usages of Python

Depends on #23329

Component: packages: standard

Author: Ralf Stephan

Branch/Commit: 5387ba5

Reviewer: Jeroen Demeyer

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