Include json_inttypes.h in json_object.h since we use types like int32_t in the API and some systems need that header to compile.
As part of this create a public json_config.h with a custom define to
decide whether to include inttypes.h to avoid conflicting with other
projects config.h header.
diff --git a/configure.in b/configure.in
index 7e2bbc8..7334319 100644
--- a/configure.in
+++ b/configure.in
@@ -11,8 +11,10 @@
# Checks for header files.
AM_CONFIG_HEADER(config.h)
+AM_CONFIG_HEADER(json_config.h)
AC_HEADER_STDC
AC_CHECK_HEADERS(fcntl.h limits.h strings.h syslog.h unistd.h [sys/param.h] stdarg.h)
+AC_CHECK_HEADER(inttypes.h,[AC_DEFINE([JSON_C_HAVE_INTTYPES_H],[1],[Public define for json_inttypes.h])])
# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST