RFC PATCH: debuginfod client doc tweak

[Frank Ch. Eigler]

commit c4726913b7766634cc5d8a97624e1b4708452d73 (HEAD -> master)
Author: Frank Ch. Eigler <fche@redhat.com>
Date:   Mon Jan 31 18:13:40 2022 -0500

    man debuginfod-client-config.7: Elaborate $DEBUGINFOD_URLS
    
    Add reference to /etc/profile.d and /etc/debuginfod/*.urls as possible
    source of default.  (No need to autoconf @prefix@ it, these paths are
    customarily distro standard rather than elfutils configurables.)
    Drop warning about federation loops, due to protection via PR27917 (0.186).
    
    Signed-off-by: Frank Ch. Eigler <fche@redhat.com>

diff --git a/doc/ChangeLog b/doc/ChangeLog
index f25bcd2ee2b3..303e3dc05dc5 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,3 +1,7 @@
+2022-01-31  Frank Ch. Eigler  <fche@redhat.com>
+
+	* debuginfod-client-config.7: Elaborate DEBUGINFOD_URLS.
+
 2021-12-08  Frank Ch. Eigler  <fche@redhat.com>
 
 	PR28661
diff --git a/doc/debuginfod-client-config.7 b/doc/debuginfod-client-config.7
index 1cc19215dd6d..fecc6038df75 100644
--- a/doc/debuginfod-client-config.7
+++ b/doc/debuginfod-client-config.7
@@ -24,8 +24,8 @@ temporary files.  The default is /tmp.
 .B $DEBUGINFOD_URLS
 This environment variable contains a list of URL prefixes for trusted
 debuginfod instances.  Alternate URL prefixes are separated by space.
-Avoid referential loops that cause a server to contact itself, directly
-or indirectly - the results would be hilarious.
+This environment variable may be set by /etc/profile.d scripts
+reading /etc/debuginfod/*.urls files.
 
 .TP
 .B $DEBUGINFOD_CACHE_PATH