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

test_parse_int64.c

@@ -29,6 +29,12 @@ int main()
 
 	checkit("x");
 
+	checkit("0");
+	checkit("-0");
+
+	checkit("00000000");
+	checkit("-00000000");
+
 	checkit("1");
 
 	strcpy(buf, "2147483647"); // aka INT32_MAX