DejaGnu 1.4.2 released

[Stephen L Moshier]

> Releases available from, the usual places.

I see
     216 Sep 13 01:51 dejagnu_1.4-2.dsc
  620136 Sep 13 01:53 dejagnu_1.4-2_all.deb
     660 Sep 13 01:51 dejagnu_1.4-2_i386.changes

Is .deb a GNU item?  How do you unpack it?