[LyX/2.4.x] Add plt as gnuplot extension (#11148)

[Richard Kimberly Heck]

commit 7ec52ec8466d4d69cfe8ed7f85666aaf1702915d
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Tue Aug 6 16:29:55 2024 +0200

    Add plt as gnuplot extension (#11148)
    
    This seems to be the common one on Windows
    
    (cherry picked from commit f2e6a9b4aed4125284712ff041b6443e0ba01c57)
---
 lib/configure.py | 2 +-
 status.24x       | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/configure.py b/lib/configure.py
index df0251268a..2674cd58ee 100644
--- a/lib/configure.py
+++ b/lib/configure.py
@@ -1288,7 +1288,7 @@ def checkConverterEntries():
             path = ['', inkscape_path])
     #
     checkProg('Gnuplot', ['gnuplot'],
-        rc_entry = [ r'''\Format gnuplot     "gp, gnuplot"    "Gnuplot"     "" "" ""  "vector"	"text/plain"
+        rc_entry = [ r'''\Format gnuplot     "gp, gnuplot, plt"    "Gnuplot"     "" "" ""  "vector"	"text/plain"
 \converter gnuplot      pdf6      "$${python} $$s/scripts/gnuplot2pdf.py $$i $$o"    "needauth"''' ])
     #
     # gnumeric/xls/ods to tex
diff --git a/status.24x b/status.24x
index 8e80a7437f..2c7925a91d 100644
--- a/status.24x
+++ b/status.24x
@@ -22,6 +22,8 @@ What's new
 - Load graphics after geometry, so page size is set properly (bug
   10970).
 
+- Recognize .plt as a GnuPlot extension (bug 11148).
+
 
 * MISCELLANEOUS