Upgrade PARI to 2.7.3

[jdemeyer]

Download http://pari.math.u-bordeaux.fr/pub/pari/snapshots/pari-2.7.2-pre2.tar.gz and rename to $SAGE_ROOT/upstream/pari-2.7.2.tar.gz.

Alternative: #16997

Depends on #15767
Depends on #16894

CC: @pjbruin @JohnCremona

Component: packages: standard

Branch/Commit: u/jdemeyer/ticket/16939 @ d9214c8

Reviewer: Jeroen Demeyer

Issue created by migration from https://trac.sagemath.org/ticket/16939

[jdemeyer]

Author: Jeroen Demeyer

[jdemeyer]

Description changed:

--- 
+++ 
@@ -1 +1 @@
-
+Download [http://pari.math.u-bordeaux.fr/pub/pari/snapshots/pari-2.7.2-pre1.tar.gz](http://pari.math.u-bordeaux.fr/pub/pari/snapshots/pari-2.7.2-pre1.tar.gz) and rename to `$SAGE_ROOT/upstream/pari-2.7.2.tar.gz`.

[jdemeyer]

Branch: u/jdemeyer/ticket/16939

[jdemeyer]

Description changed:

--- 
+++ 
@@ -1 +1 @@
-Download [http://pari.math.u-bordeaux.fr/pub/pari/snapshots/pari-2.7.2-pre1.tar.gz](http://pari.math.u-bordeaux.fr/pub/pari/snapshots/pari-2.7.2-pre1.tar.gz) and rename to `$SAGE_ROOT/upstream/pari-2.7.2.tar.gz`.
+Download [http://pari.math.u-bordeaux.fr/pub/pari/snapshots/pari-2.7.2-pre2.tar.gz](http://pari.math.u-bordeaux.fr/pub/pari/snapshots/pari-2.7.2-pre2.tar.gz) and rename to `$SAGE_ROOT/upstream/pari-2.7.2.tar.gz`.

[jdemeyer]

Commit: ce51a08

[jdemeyer]

New commits:

ce51a08

Upgrade to PARI 2.7.2

[sagetrac-git]

Changed commit from ce51a08 to d9214c8

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:

d9214c8

Upgrade to PARI 2.7.2

[jdemeyer]

Description changed:

--- 
+++ 
@@ -1 +1,3 @@
 Download [http://pari.math.u-bordeaux.fr/pub/pari/snapshots/pari-2.7.2-pre2.tar.gz](http://pari.math.u-bordeaux.fr/pub/pari/snapshots/pari-2.7.2-pre2.tar.gz) and rename to `$SAGE_ROOT/upstream/pari-2.7.2.tar.gz`.
+
+Alternative: #16997

[pjbruin]

comment:6

PARI 2.7.2 was released last week. If you want to finish this straightforward upgrade, I will be happy to review it; I don't currently want to spend a lot of time on the alternative #16997, especially because of the new patches on that ticket and the related upstream issues.

[jdemeyer]

comment:7

Replying to @pjbruin:

PARI 2.7.2 was released last week. If you want to finish this straightforward upgrade, I will be happy to review it;

I see no reason to finish this ticket: it doesn't solve any problem we're currently having and I prefer to put efforts towards #16997 instead.