in hashstore stream_do, unlink log files a little later, and make mem usage a touch more liberal
in hashstore stream_do, unlink log files a little later, and make mem usage a touch more liberal

limeng12/jbrowse,GMOD/jbrowse,erasche/jbrowse,Arabidopsis-Information-Portal/jbrowse,GMOD/jbrowse,erasche/jbrowse,limeng12/jbrowse,Arabidopsis-Information-Portal/jbrowse,erasche/jbrowse,nathandunn/jbrowse,limeng12/jbrowse,erasche/jbrowse,limeng12/jbrowse,Arabidopsis-Information-Portal/jbrowse,erasche/jbrowse,Arabidopsis-Information-Portal/jbrowse,limeng12/jbrowse,Arabidopsis-Information-Portal/jbrowse,erasche/jbrowse,limeng12/jbrowse,nathandunn/jbrowse,Arabidopsis-Information-Portal/jbrowse,nathandunn/jbrowse,limeng12/jbrowse,nathandunn/jbrowse,Arabidopsis-Information-Portal/jbrowse,nathandunn/jbrowse,GMOD/jbrowse,erasche/jbrowse,erasche/jbrowse,limeng12/jbrowse,GMOD/jbrowse,GMOD/jbrowse