Nail size of VCL_INT and VCL_BYTES at 64 bits.

include/vrt.h

@@ -136,13 +136,13 @@ typedef const struct director *			VCL_BACKEND;
 typedef const struct vmod_priv *		VCL_BLOB;
 typedef const char *				VCL_BODY;
 typedef unsigned				VCL_BOOL;
-typedef long long				VCL_BYTES;
+typedef int64_t					VCL_BYTES;
 typedef double					VCL_DURATION;
 typedef const char *				VCL_ENUM;
 typedef const struct gethdr_s *			VCL_HEADER;
 typedef struct http *				VCL_HTTP;
 typedef void					VCL_INSTANCE;
-typedef long					VCL_INT;
+typedef int64_t					VCL_INT;
 typedef const struct suckaddr *			VCL_IP;
 typedef const struct vrt_backend_probe *	VCL_PROBE;
 typedef double					VCL_REAL;