Merge remote-tracking branch 'origin/maint'

* origin/maint:
  maint: formatting changes.
  tests: support api.prefix.
  tests: pacify font-lock-mode.
  tests: remove test covered elsewhere.
  tests: factor the declaration/definition of yyerror and yylex.
  regen.
  tests: portability issues.
  tests: call the parser from another compilation unit.
  glr.c, yacc.c: declare yydebug in the header.
  skeletons: use header guards.
  tests: improve AT_FULL_COMPILE.
  tests: reorder.
  tests: strengthen the test on generated headers inclusion
  yacc.c: instead of duplicating y.tab.h inside y.tac.c, include it.
  yacc.c: factor.

Conflicts:
	NEWS
	data/glr.c
	data/yacc.c
	src/parse-gram.c
	src/parse-gram.h
	tests/conflicts.at
	tests/regression.at

data/glr.c

@@ -171,9 +171,11 @@ m4_define([b4_rhs_location],
 # Declaration that might either go into the header (if --defines)
 # or open coded in the parser body.
 m4_define([b4_shared_declarations],
-[b4_percent_code_get([[requires]])[
+[b4_declare_yydebug[
+]b4_percent_code_get([[requires]])[
 ]b4_token_enums(b4_tokens)[
 ]b4_declare_yylstype[
+]b4_c_ansi_function_decl(b4_prefix[parse], [int], b4_parse_param)[
 ]b4_percent_code_get([[provides]])[]dnl
 ])
 
@@ -213,11 +215,6 @@ m4_if(b4_prefix, [yy], [],
 ]b4_defines_if([[#include "@basename(]b4_spec_defines_file[@)"]],
               [b4_shared_declarations])[
 
-/* Enabling traces.  */
-#ifndef YYDEBUG
-# define YYDEBUG ]b4_parse_trace_if([1], [0])[
-#endif
-
 /* Enabling verbose error messages.  */
 #ifdef YYERROR_VERBOSE
 # undef YYERROR_VERBOSE
@@ -417,9 +414,6 @@ dnl We probably ought to introduce a type for confl.
   ]b4_conflicting_rules[
 };
 
-/* Prevent warning if -Wmissing-prototypes.  */
-]b4_c_ansi_function_decl([yyparse], [int], b4_parse_param)[
-
 /* Error token number */
 #define YYTERROR 1
 
@@ -2626,15 +2620,12 @@ m4_if(b4_skeleton, ["glr.c"],
 [b4_defines_if(
 [@output(b4_spec_defines_file@)@
 b4_copyright([Skeleton interface for Bison GLR parsers in C],
-             [2002-2012])
+             [2002-2012])[
 
-b4_shared_declarations
-
-b4_pure_if([],
-[[extern YYSTYPE ]b4_prefix[lval;]])
-
-b4_locations_if([b4_pure_if([],
-[extern YYLTYPE ]b4_prefix[lloc;])
-])
-])])[]dnl
+]b4_cpp_guard_open([b4_spec_defines_file])[
+]b4_shared_declarations[
+]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;
+]b4_locations_if([[extern YYLTYPE ]b4_prefix[lloc;]])])[
+]b4_cpp_guard_close([b4_spec_defines_file])[
+]])])
 m4_divert_pop(0)