{maint} maint: fix some syntax-check issues

[Akim Demaille]

commit 466a2de317ceac0734e25f7a8314ec9ad2735ba5
Author: Akim Demaille <address@hidden>
Date:   Fri Jul 27 17:00:28 2012 +0200

    maint: fix some syntax-check issues
    
    * cfg.mk: Nuke the following warnings which are confused by our
    text reports (that state that the error token is number 256).
      prohibit_magic_number_exit
      ../../doc/bison.texi:8170:error (256)
      ../../tests/conflicts.at:570:error (256)
      ../../tests/conflicts.at:673:error (256)
      ../../tests/conflicts.at:811:error (256)
      ../../tests/conflicts.at:1154:error (256)
      ../../tests/regression.at:281:error (256)
      ../../tests/regression.at:582:error (256)
      maint.mk: use EXIT_* values rather than magic number

diff --git a/cfg.mk b/cfg.mk
index 2f1a9e9..53855ae 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -65,12 +65,14 @@ exclude = \
 $(call exclude,                                                                
\
   bindtextdomain=^lib/main.c$$                                         \
   program_name=^lib/main.c$$                                           \
-  prohibit_always-defined_macros=^data/yacc.c|^djgpp/                  \
+  prohibit_always-defined_macros=^data/yacc.c$$|^djgpp/                        
\
   prohibit_always-defined_macros+=?|^lib/timevar.c$$                   \
   prohibit_always-defined_macros+=?|^src/(parse-gram.c|system.h)$$     \
   prohibit_always-defined_macros+=?|^tests/regression.at$$             \
   prohibit_defined_have_decl_tests=?|^lib/timevar.c$$                  \
   prohibit_empty_lines_at_EOF=^src/parse-gram.[ch]$$                   \
+  prohibit_magic_number_exit=^doc/bison.texi$$                         \
+  prohibit_magic_number_exit+=?|^tests/(conflicts|regression).at$$     \
   require_config_h_first=^(lib/yyerror|data/(glr|yacc))\.c$$           \
   space_tab=^tests/(input|c\+\+)\.at$$                                 \
   trailing_blank=^src/parse-gram.[ch]$$                                        
\