[1.5] The two files in Issue145 have a precision < 8-bit:

therefore 'jp2_read_pclr' must be changed.

j2k_to_image fails to create RGB/RGBA images with a
precision < 8-bit: therefore 'imagetopng' must be
changed.
Update issue 145

libopenjpeg/jp2.c

@@ -469,7 +469,7 @@ static opj_bool jp2_read_pclr(opj_jp2_t *jp2, opj_cio_t *cio,
 	for(i = 0; i < nr_channels; ++i)
   {
 /* Cji */
-	*entries++ = cio_read(cio, channel_size[i]>>3);
+	*entries++ = cio_read(cio, (channel_size[i]+7)>>3);
   }
    }