spkg-configure.m4 for NTL

[dimpase]

implemented a direct version check using AC_RUN_IFELSE.
The rest is standard, as in #27212, basically.

to be merged as a part of #27822

Depends on #27212
Depends on #27641
Depends on #27751
Depends on #27259

CC: @embray @kiwifb @jdemeyer

Component: build: configure

Keywords: spkg-configure ntl

Author: Dima Pasechnik, Erik Bray

Branch/Commit: public/packages/ntlconf @ 892143a

Reviewer: Erik Bray, Dima Pasechnik

Issue created by migration from https://trac.sagemath.org/ticket/27265

[dimpase]

Description changed:

--- 
+++ 
@@ -1 +1,9 @@
+one can basically borrow NTL recognition, `LB_CHECK_NTL`, from
+http://web.mit.edu/sage/export/linbox-1.1.6~rc0/m4/ntl-check.m4
 
+```
+SAGE_SPKG_CONFIGURE([ntl], [
+    LB_CHECK_NTL(10.3, [sage_spkg_install_ntl=no], [sage_spkg_install_ntl=yes])
+    ])
+```
+--- not sure what's the latest version of it.

[dimpase]

Dependencies: #27212

[dimpase]

Changed dependencies from #27212 to #27212, #27238

[dimpase]

comment:4

here we might want to check that NTL is built with gf2x. However, it appears that it's only question of better performance, not an exta API, if it gf2x is linked.

[dimpase]

Branch: u/dimpase/packages/ntlconf

[dimpase]

Commit: af9ab90

[dimpase]

Last 10 new commits:

b80bf72	Reworked this a bit more
0ca3f56	fix typo
06798ca	added a bit more explanation
b592d77	correct logic for SAGE_GMP_PREFIX etc
5057680	add the AX_ABSOLUTE_HEADER macro
101537b	iml in particular is very picky about being given an absolute path to the
862ca6a	Merge remote-tracking branch 'trac/develop' into HEAD
03dc987	Merged trac #27215 in
c9873ae	Merge remote-tracking branch 'trac/develop' into mpf
af9ab90	deal with --with-ntl, proper version check

[dimpase]

Author: Dima Pasechnik

[dimpase]

Description changed:

--- 
+++ 
@@ -1,9 +1,2 @@
-one can basically borrow NTL recognition, `LB_CHECK_NTL`, from
-http://web.mit.edu/sage/export/linbox-1.1.6~rc0/m4/ntl-check.m4
-
-```
-SAGE_SPKG_CONFIGURE([ntl], [
-    LB_CHECK_NTL(10.3, [sage_spkg_install_ntl=no], [sage_spkg_install_ntl=yes])
-    ])
-```
---- not sure what's the latest version of it.
+implemented a direct version check using `AC_RUN_IFELSE`.
+The rest is standard, as in #27212, basically.

[dimpase]

Changed dependencies from #27212, #27238 to #27212