build: fix test suite after changes to json.h

Since json.h after commit 25daae3 no
longer includes the private headers, make the test suite include the
individual headers as needed.
An alternative would be to create a "json_internal.h", which the tests
can include and which reference all internal headers.

tests/parse_flags.c

@@ -2,6 +2,7 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <stdlib.h>
 
 #include "../json.h"
 #include "parse_flags.h"

tests/test1.c

@@ -6,6 +6,8 @@
 #include <assert.h>
 
 #include "../json.h"
+#include "../debug.h"
+#include "../linkhash.h"
 #include "parse_flags.h"
 
 static int sort_fn (const void *j1, const void *j2)

tests/test2.c

@@ -5,6 +5,7 @@
 #include <string.h>
 
 #include "../json.h"
+#include "../debug.h"
 #include "parse_flags.h"
 
 #ifdef TEST_FORMATTED

tests/testReplaceExisting.c

@@ -5,6 +5,8 @@
 #include <string.h>
 
 #include "../json.h"
+#include "../debug.h"
+#include "../linkhash.h"
 
 int main(int __attribute__((unused)) argc, char __attribute__((unused)) **argv)
 {

tests/test_charcase.c

@@ -7,6 +7,7 @@
 
 #include "../json.h"
 #include "../json_tokener.h"
+#include "../debug.h"
 
 static void test_case_parse(void);
 

tests/test_locale.c

@@ -7,6 +7,7 @@
 
 #include "../json.h"
 #include "../json_tokener.h"
+#include "../debug.h"
 
 #ifdef HAVE_LOCALE_H
 #include <locale.h>

tests/test_parse.c

@@ -7,6 +7,7 @@
 
 #include "../json.h"
 #include "../json_tokener.h"
+#include "../debug.h"
 
 static void test_basic_parse(void);
 static void test_verbose_parse(void);

tests/test_set_serializer.c

@@ -5,6 +5,7 @@
 
 #include "../json.h"
 #include "../printbuf.h"
+#include "../debug.h"
 
 struct myinfo {
 	int value;