Fix issue with matdump and 64-bit integer classes
Fix issue with matdump and 64-bit integer classes

* tools/matdump.c (mxclass): Added 64-bit signed and unsigned integer
      classes

tbeu/matio,tbeu/matio,tbeu/matio,MaartenBent/matio,MaartenBent/matio,MaartenBent/matio,CBL-ORION/matio-sf-mirror,martinichka/matio-coder,MaartenBent/matio,CBL-ORION/matio,tbeu/matio,telehan/libmatio,CBL-ORION/matio,NJannasch/matio,telehan/libmatio,martinichka/matio-coder,NJannasch/matio,martinichka/matio-coder,CBL-ORION/matio-sf-mirror