Upgrade fplll and fpylll

[jdemeyer]

Tarballs:

1. https://github.com/fplll/fplll/releases/download/5.2.0/fplll-5.2.0.tar.gz

2. https://pypi.python.org/packages/1e/b8/1bcb8911dbf7211d0008d21578ad04194a5993b6021c2300ca74a676847e/fpylll-0.3.0dev.tar.gz

We also rename the Sage package libfplll -> fplll (this was attempted before in #21221 but reverted in #21675)

CC: @malb @jpflori @embray @kiwifb

Component: packages: standard

Author: Jeroen Demeyer

Branch/Commit: 2b0b4ab

Reviewer: François Bissey

Issue created by migration from https://trac.sagemath.org/ticket/24042

[jdemeyer]

Description changed:

--- 
+++ 
@@ -3,3 +3,5 @@
 1. https://github.com/fplll/fplll/releases/download/5.2.0/fplll-5.2.0.tar.gz
 
 2. https://pypi.python.org/packages/1e/b8/1bcb8911dbf7211d0008d21578ad04194a5993b6021c2300ca74a676847e/fpylll-0.3.0dev.tar.gz
+
+We also rename the Sage package `libfplll` -> `fplll` (this was attempted before in #21221 but reverted in #21675)

[jdemeyer]

Branch: u/jdemeyer/upgrade_fplll_and_fpylll

[jdemeyer]

Author: Jeroen Demeyer

[jdemeyer]

Commit: 2b0b4ab

[jdemeyer]

New commits:

2b0b4ab

Upgrade fplll and fpylll

[jdemeyer]

comment:5

Ping?

[kiwifb]

Reviewer: François Bissey

[kiwifb]

comment:6

Pass basic tests. I'll put it to positive review.