[glibc] Make sure INSTALL is ASCII plaintext

[Siddhesh Poyarekar <siddhesh@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c14f2e4aaa0f43e2ccb4e77deaa5101dd5af384a

commit c14f2e4aaa0f43e2ccb4e77deaa5101dd5af384a
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date:   Thu Jun 29 11:07:52 2023 -0400

    Make sure INSTALL is ASCII plaintext
    
    Add --disable-encoding to makeinfo flags so that it does not generate
    unicode quote glyphs.
    
    Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>

Diff:
---
 INSTALL  | 4 ++--
 Makefile | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/INSTALL b/INSTALL
index 6d51475536..f921f82b4c 100644
--- a/INSTALL
+++ b/INSTALL
@@ -469,8 +469,8 @@ build the GNU C Library:
 
    * GNU 'make' 4.0 or newer
 
-     As of release time, GNU 'make' 4.4 is the newest verified to work to
-     build the GNU C Library.
+     As of release time, GNU 'make' 4.4 is the newest verified to work
+     to build the GNU C Library.
 
    * GCC 6.2 or newer
 
diff --git a/Makefile b/Makefile
index f324df7a1f..f26050204a 100644
--- a/Makefile
+++ b/Makefile
@@ -734,7 +734,7 @@ endif
 INSTALL: manual/install-plain.texi manual/macros.texi \
 	 $(common-objpfx)manual/pkgvers.texi manual/install.texi
 	makeinfo --no-validate --plaintext --no-number-sections \
-		 -I$(common-objpfx)manual $< -o $@-tmp
+		 --disable-encoding -I$(common-objpfx)manual $< -o $@-tmp
 	$(AWK) 'NF == 0 { ++n; next } \
 		NF != 0 { while (n-- > 0) print ""; n = 0; print }' \
 	  < $@-tmp > $@-tmp2