Scripts to create aligned ancient repeat tracks.  These are no longer a
standard browser track, however here is the process for building the
track given the penn state aar alignment.

    cd ~/oo/bed
    mkdir aarMm2
    cd aarMm2
    set mmdir=../../blastz.mm2.2002-08-01
    foreach aar ($mmdir/aar/*.aar.gz)
         zcat $aar | aarToAxt | axtToPsl stdin $mmdir/H.len $mmdir/M.len stdout | liftUp -type=.psl -nohead -pslQ stdout $mmdir/liftAllMm2.lft warn stdin > chr$aar:t:r:r_aarMm2.psl
    end   
    hgLoadPsl hg12 *.psl

