ecpg shouldn't depend on parser/gramparse.h. Also, eliminate some

compiler warnings caused by lack of extern declarations in extern.h.
I believe the remaining gcc warnings here would go away if the ecpg
grammar could be tweaked so it doesn't use REJECT ...

src/interfaces/ecpg/preproc/extern.h

@@ -36,11 +36,12 @@ extern void output_line_number(void);
 extern void lex_init(void);
 extern char *input_filename;
 extern int	yyparse(void);
+extern int	yylex(void);
+extern void yyerror(char *);
 extern void *mm_alloc(size_t), *mm_realloc(void *, size_t);
 extern char *mm_strdup(const char *);
 ScanKeyword *ScanECPGKeywordLookup(char *);
 ScanKeyword *ScanCKeywordLookup(char *);
-extern void yyerror(char *);
 
 /* return codes */
 

src/interfaces/ecpg/preproc/pgc.l

@@ -11,7 +11,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/interfaces/ecpg/preproc/pgc.l,v 1.47 1999/12/21 17:42:16 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/interfaces/ecpg/preproc/pgc.l,v 1.48 2000/01/20 05:23:26 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -25,7 +25,6 @@
 #include "miscadmin.h"
 #include "nodes/parsenodes.h"
 #include "nodes/pg_list.h"
-#include "parser/gramparse.h"
 #include "parser/scansup.h"
 #include "extern.h"
 #include "preproc.h"