Improve the check for departures from C89, and fix the departures

I found.
* Makefile.maint (my-distcheck): Also check for C89 compatibility
as best we can with GCC.
* src/stat.c (PRINTF_OPTION): Omit comma before } in enum
declaration; C89 doesn't allow this.
* src/dcgen: Don't generate string literals longer than
what C89 requires support for.
* src/cut.c (usage): Don't use string literals longer than
what C89 requires support for.
* src/date.c (usage): Likewise.
* src/dd.c (usage): Likewise.
* src/du.c (usage): Likewise.
* src/ls.c (usage): Likewise.
* src/od.c (usage): Likewise.
* src/readlink.c (usage): Likewise.
* src/seq.c (usage): Likewise.
* src/shred.c (usage): Likewise.

1 files changed, 7 insertions, 5 deletions

diff --git a/src/dcgen b/src/dcgen
index a3f04c37c..5df3c56b8 100755
--- a/src/dcgen
+++ b/src/dcgen
@@ -1,7 +1,7 @@
 #!/usr/bin/perl -w
 # dcgen -- convert dircolors.hin to dircolors.h.
 
-# Copyright (C) 1996, 1998, 2004, 2005 Free Software Foundation, Inc.
+# Copyright (C) 1996, 1998, 2004, 2005, 2006 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -44,12 +44,14 @@ while (<>)
       and push @line, $_;
   }
 
-my $last_line = pop @line;
 my $indent = '  ';
 
-print "static char const G_line[] =\n";
+print "static char const G_line[] =\n{\n";
 foreach (@line)
   {
-    print "$indent\"$_\\0\"\n";
+    s/./'$&',/g;
+    s/'\\'/'\\\\'/g;
+    s/'''/'\\''/g;
+    print "$indent${_}0,\n";
   }
-print "$indent\"$last_line\";\n";
+print "};\n";