Move memory tracing libs to appropriate sub-packages

Commit 2d5af83031 moved libc_malloc_debug.so.0 to glibc-utils, but
this made it impossible to install the 32-bit version of the library on
x86_64.

libmemusage.so is a similar tracing library that is currently shipped in
glibc but should also (with the exception of i686) be moved to
glibc-utils.

This commit fixes that by:

1. Moving libc_malloc_debug.so.0 back to glibc on i686.

2. Moving libmemusage.so to glibc-utils, again, except on i686.

glibc.spec

@@ -170,7 +170,7 @@ Version: %{glibcversion}
 # - It allows using the Release number without the %%dist tag in the dependency
 #   generator to make the generated requires interchangeable between Rawhide
 #   and ELN (.elnYY < .fcXX).
-%global baserelease 19
+%global baserelease 20
 Release: %{baserelease}%{?dist}
 
 # Licenses:
@@ -307,6 +307,18 @@ rpm.define("__debug_install_post bash " .. wrapper
 %global _no_recompute_build_ids 1
 %undefine _unique_build_ids
 
+%ifarch %{ix86}
+# The memory tracing tools (like mtrace, memusage) in glibc-utils only work
+# when the corresponding memory tracing libraries are preloaded.  So we ship
+# memory allocation tracing/checking libraries in glibc-utils, except on
+# i686 where we need to ship them in glibc.i686.  This is because
+# glibc-utils.x86_64 will contain only the 64-bit version of these
+# libraries.
+%global glibc_ship_tracelibs_in_utils 0
+%else
+%global glibc_ship_tracelibs_in_utils 1
+%endif
+
 ##############################################################################
 # Patches:
 # - See each individual patch file for origin and upstream status.
@@ -1902,7 +1914,9 @@ cat master.filelist \
 	-e '/var/db/Makefile' \
 	-e '/libnss_.*\.so[0-9.]*$' \
 	-e '/libnsl' \
+%if %{glibc_ship_tracelibs_in_utils}
 	-e 'libc_malloc_debug\.so' \
+%endif
 	-e 'glibc-benchtests' \
 	-e 'aux-cache' \
 %ifarch x86_64
@@ -1926,7 +1940,12 @@ for module in compat files dns; do
 %endif
 	>> glibc.filelist
 done
-grep -e "libmemusage.so" -e "libpcprofile.so" master.filelist \
+grep \
+%if ! %{glibc_ship_tracelibs_in_utils}
+	-e "libmemusage.so" \
+%endif
+	-e "libpcprofile.so" \
+	master.filelist \
 %ifarch x86_64
 %dnl Exclude 32-bit libraries built for glibc32.
 	| grep -v -e /lib/lib \
@@ -2102,9 +2121,12 @@ cat > utils.filelist <<EOF
 %{_prefix}/bin/xtrace
 EOF
 
-# libc_malloc_debug needs to be preloaded in order to enable mtrace, so we
-# include it in the same subpackage.
-grep '%{_lib}/libc_malloc_debug\.so' < master.filelist >> utils.filelist
+%if %{glibc_ship_tracelibs_in_utils}
+grep \
+	-e '%{_lib}/libc_malloc_debug\.so' \
+	-e '%{_lib}/libmemusage.so' \
+	< master.filelist >> utils.filelist
+%endif
 
 ###############################################################################
 # nss_db, nss_hesiod
@@ -2532,6 +2554,10 @@ update_gconv_modules_cache ()
 %endif
 
 %changelog
+* Wed May 15 2024 Arjun Shankar <arjun@redhat.com> - 2.39.9000-20
+- i686: Move libc_malloc_debug.so.0 back to glibc
+- Other arches: Move libmemusage.so to glibc-utils
+
 * Tue May 14 2024 Arjun Shankar <arjun@redhat.com> - 2.39.9000-19
 - Move libc_malloc_debug.so.0 from glibc to glibc-utils