doc: mention the texinfo documentation in --help

* src/system.h: Rename emit_bug_reporting_address() to
emit_ancillary_info() and update it to not print the translation
project address in en_* locales, and _do_ print it in the 'C'
(and other) locales so that it's included in the default man page.
Also mention how to invoke the texinfo documentation for each command.
Also move the "hard-locale.h" include to the 8 files that now use it.
* man/help2man: Strip the newly added texinfo reference from the
--help output as a more verbose version is already added by help2man.
Suggestion from C de-Avillez

1 files changed, 1 insertions, 1 deletions

diff --git a/src/rm.c b/src/rm.c
index 6c3255198..64e095d9e 100644
--- a/src/rm.c
+++ b/src/rm.c
@@ -180,7 +180,7 @@ Note that if you use rm to remove a file, it is usually possible to recover\n\
 the contents of that file.  If you want more assurance that the contents are\n\
 truly unrecoverable, consider using shred.\n\
 "), stdout);
-      emit_bug_reporting_address ();
+      emit_ancillary_info ();
     }
   exit (status);
 }