Simplify things by storing integer values only as int64_t's internally, and

omit the range check during parsing since we already have the checks when
 accessing the value. There is no longer a json_type_int64, only json_type_int.
Fix some problems with parsing 0 and -0 values, and add a couple of tests.
Fix some minor compile issues on HPUX environments.


git-svn-id: http://svn.metaparadigm.com/svn/json-c/trunk@60 327403b1-1117-474d-bef2-5cb71233fd97

printbuf.c

@@ -123,7 +123,7 @@ int sprintbuf(struct printbuf *p, const char *msg, ...)
      would have been written - this code handles both cases. */
   if(size == -1 || size > 127) {
     va_start(ap, msg);
-    if((size = vasprintf(&t, msg, ap)) == -1) { va_end(ap); return -1; }
+    if((size = vasprintf(&t, msg, ap)) < 0) { va_end(ap); return -1; }
     va_end(ap);
     printbuf_memappend(p, t, size);
     free(t);