[travis] install libgpm-dev and run make check
[travis] install libgpm-dev and run make check


tstack/lnav,sureshsundriyal/lnav,acleasby/lnav,tstack/lnav,acleasby/lnav,sureshsundriyal/lnav,sureshsundriyal/lnav,acleasby/lnav,acleasby/lnav,acleasby/lnav,tstack/lnav,sureshsundriyal/lnav,tstack/lnav