json: Clean up headers

The JSON parser has three public headers, json-lexer.h, json-parser.h,
json-streamer.h.  They all contain stuff that is of no interest
outside qobject/json-*.c.

Collect the public interface in include/qapi/qmp/json-parser.h, and
everything else in qobject/json-parser-int.h.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180823164025.12553-54-armbru@redhat.com>

include/qapi/qmp/json-lexer.h

@@ -1,50 +0,0 @@
-/*
- * JSON lexer
- *
- * Copyright IBM, Corp. 2009
- *
- * Authors:
- *  Anthony Liguori   <aliguori@us.ibm.com>
- *
- * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
- * See the COPYING.LIB file in the top-level directory.
- *
- */
-
-#ifndef QEMU_JSON_LEXER_H
-#define QEMU_JSON_LEXER_H
-
-
-typedef enum json_token_type {
-    JSON_MIN = 100,
-    JSON_LCURLY = JSON_MIN,
-    JSON_RCURLY,
-    JSON_LSQUARE,
-    JSON_RSQUARE,
-    JSON_COLON,
-    JSON_COMMA,
-    JSON_INTEGER,
-    JSON_FLOAT,
-    JSON_KEYWORD,
-    JSON_STRING,
-    JSON_INTERP,
-    JSON_SKIP,
-    JSON_ERROR,
-    JSON_END_OF_INPUT,
-} JSONTokenType;
-
-typedef struct JSONLexer {
-    int start_state, state;
-    GString *token;
-    int x, y;
-} JSONLexer;
-
-void json_lexer_init(JSONLexer *lexer, bool enable_interpolation);
-
-void json_lexer_feed(JSONLexer *lexer, const char *buffer, size_t size);
-
-void json_lexer_flush(JSONLexer *lexer);
-
-void json_lexer_destroy(JSONLexer *lexer);
-
-#endif