[genius] add patch from gentoo to fix ncurses

[Jiri (George) Lebl <jirka src gnome org>]

commit 0df0e9d1cb96d126285fb5cd54370a045c9d1f61
Author: Jiri (George) Lebl <jiri lebl gmail com>
Date:   Sun Feb 16 11:00:02 2020 -0600

    add patch from gentoo to fix ncurses

 ChangeLog    | 5 +++++
 configure.ac | 6 ++++--
 2 files changed, 9 insertions(+), 2 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 4f6617bf..5d3de4b1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sun Feb 16 10:59:55 2020  Jiri (George) Lebl <jirka 5z com>
+
+       * configure.ac: Add patch to fix ncurses check
+         
https://gitweb.gentoo.org/repo/gentoo.git/tree/sci-mathematics/genius/files/genius-1.0.23-tinfo.patch
+
 Mon Dec 09 09:21:55 2019  Jiri (George) Lebl <jirka 5z com>
 
        * compil.c: Fix encoding empty string, affected functions are
diff --git a/configure.ac b/configure.ac
index f85bdbad..15f7d696 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,6 +15,8 @@ AM_MAINTAINER_MODE
 
 AC_PROG_INTLTOOL([0.21])
 
+PKG_PROG_PKG_CONFIG
+
 dnl ================= Requirements ================================================
 
 GTK_REQUIRED=2.20.0
@@ -64,8 +66,8 @@ AC_PATH_PROG(GLIB_GENMARSHAL, glib-genmarshal)
 
 dnl Check for termcap
 AC_CHECK_LIB(termcap, tgetent,[TERMCAP_LIB="-ltermcap"],
-            [AC_CHECK_LIB(ncurses, tgetent,
-                           [TERMCAP_LIB="-lncurses"
+            [PKG_CHECK_MODULES(NCURSES, ncurses,
+                           [TERMCAP_LIB="$NCURSES_LIBS"
                             AC_DEFINE(USE_NCURSES,[1], [Use ncurses library])
                             AC_CHECK_HEADER(ncurses/curses.h, [
                                            AC_DEFINE(INC_NCURSES,[1],[ncurses include])])], [