* src/output.c: Formatting changes.

* src/machine.h: Remove, leaving its contents in...
* src/system.h: here.
Include stdio.h.
Adjust all dependencies on stdio.h and machine.h.
* src/getargs.h: New file.
Let all `extern' declarations about getargs.c be replaced with
inclusion of `getargs.h'.
* src/Makefile.am (noinst_HEADERS): Adjust.

* tests/calc.m4 (yyin): Be initialized in main, not on the global
scope.
(yyerror): Returns void, not int.
* doc/bison.texinfo: Formatting changes.

src/lex.c

@@ -26,8 +26,8 @@
    and the name is looked up in the symbol table using symtab.c;
    symval is set to a pointer to the entry found.  */
 
-#include <stdio.h>
 #include "system.h"
+#include "getargs.h"
 #include "files.h"
 #include "getopt.h"		/* for optarg */
 #include "symtab.h"
@@ -35,17 +35,6 @@
 #include "alloc.h"
 #include "complain.h"
 
-/* flags set by % directives */
-extern int definesflag;    	/* for -d */
-extern int toknumflag;   	/* for -k */
-extern int noparserflag;	/* for -n */
-extern int fixed_outfiles;  	/* for -y */
-extern int nolinesflag;    	/* for -l */
-extern int rawtoknumflag;	/* for -r */
-extern int verboseflag;	/* for -v */
-extern int debugflag;  		/* for -t */
-extern char *spec_name_prefix; 	/* for -p */
-extern char *spec_file_prefix;	/* for -b */
 /*spec_outfile is declared in files.h, for -o */
 
 extern int translations;