[PATCH] build: modernize bootstrap prerequsite tools

[Pádraig Brady]

Following on from commit v9.0-15-gaa31b919c
which updated README-prereq...

* bootstrap.conf: Add an explicit requirement on m4.
Add an explicit requirement on texi2pdf which is often
packaged separately to makeinfo and induces a failure
far down the distribution phase if not present.
Replace the rsync dependency with wget,
which gnulib changed to in 2018.
---
 bootstrap.conf | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/bootstrap.conf b/bootstrap.conf
index 7ab5f5895..238f68dc7 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -364,11 +364,13 @@ gettext    0.19.2
 git        1.4.4
 gperf      -
 gzip       -
+m4         -
 makeinfo   6.1
+texi2pdf   6.1
 patch      -
 perl       5.5
-rsync      -
 tar        -
+wget       -
 xz         -
 "
 
-- 
2.40.1