Please test pari-2.15.4 prerelease 1

Dear PARI developers,

We have made available a prerelease of PARI 2.15.4 (stable).

In particular it fixes an rare infinite loop when factoring some integers.

Please test there are no regressions!

The expected release date is 10/07/2023.

Please test the prerelease tarball:
<https://pari.math.u-bordeaux.fr/pub/pari/snapshots/pari-2.15.4-pre1.tar.gz>

The digital signature is 
<https://pari.math.u-bordeaux.fr/pub/pari/snapshots/pari-2.15.4-pre1.tar.gz.asc>

Please test the 64bit Windows installer:
<https://pari.math.u-bordeaux.fr/pub/pari/windows/snapshots/Pari64-2-15-4-pre1.exe>

I have also built the 32bit Windows installer:
<https://pari.math.u-bordeaux.fr/pub/pari/windows/snapshots/Pari32-2-15-4-pre1.exe>

and the following standalone Windows binaries:

32bit 
<https://pari.math.u-bordeaux.fr/pub/pari/windows/snapshots/gp32-2-15-4-pre1.exe>
<https://pari.math.u-bordeaux.fr/pub/pari/windows/snapshots/gp32-readline-2-15-4-pre1.exe>

64bit
<https://pari.math.u-bordeaux.fr/pub/pari/windows/snapshots/gp64-2-15-4-pre1.exe>
<https://pari.math.u-bordeaux.fr/pub/pari/windows/snapshots/gp64-readline-2-15-4-pre1.exe>

64bit, multithreaded
<https://pari.math.u-bordeaux.fr/pub/pari/windows/snapshots/gppthread64-2-15-4-pre1.exe>
<https://pari.math.u-bordeaux.fr/pub/pari/windows/snapshots/gppthread64-readline-2-15-4-pre1.exe>

I will provide link to MacOS binaries later.

I join the CHANGES

On behalf of the PARI Group,
Bill

Bug numbers refer to the BTS at http://pari.math.u-bordeaux.fr/Bugs/

[last column crossreferences current development release 2.16.1]
Done for version 2.15.4 (released 10/07/2023):
  Fixed
BA  1- lfunan(lfunetaquo([12,1;13*12,1]),1) -> stack overflow [#2457]      [F1]
BA  2- FpM_intersect could return a Flm [#2459]                            [F2]
    3- ifac_isprime could be called on input with tiny divisors            [F3]
BA  4- nfcompositum could return non-monic polynomials [#2461]             [F4]
BA  5- gammamellininvinit(vector(9,i,1)) -> SEGV                           [F5]
    6- incorrect sanity check in rnfeltdown ("not in base field") [#2464]  [F6]
HC  7- precision loss in gammamellininv [#2462]                            [F7]
BA  8- [pthread] parselect could crash                                     [F8]
BA  9- rare infinite loop in ellsaturation                                 [F9]
BA 10- quadunitindex(8461,2)->1 instead of 3 [#2466]                      [F10]
BA 11- chinese(Mod(1,3)*(x^2+x+2),Mod(1,5)*(x-1))->incorrect leading term [F11]
BA 12- lindep([0,x]) -> SEGV                                              [F12]
BA 13- [libpari] RgX_div_by_X_x: wrong variable number                    [F13]
MS 14- hyperellratpoints(2*x^3+x^2-x,1000) -> wrong result [#2475]        [F15]
BA 15- ellisogeny over a nf -> inconsistent variables error               [F16]
BA 16- w=3;quadgen(5) -> print x instead of w [#2477]                     [F17]
BA 17- FpX_convol: wrong result for mixed degree                          [F18]
   18- mateigen(,1): eigenvalues were given as t_VEC or t_COL. Use t_COL. [F20]
BA 19- ellcard over small finite field: potential oo-loop [#2483]         [F21]