ENH: adding ConvertImageSetToEigenvectors --- also fixed bug in CompCorr 
ENH: adding ConvertImageSetToEigenvectors --- also fixed bug in CompCorr 

dawnsong/ANTs,dawnsong/ANTs,fliem/ANTs,dawnsong/ANTs,acaprihan/Lungs,dawnsong/ANTs,DaisukeMiyamoto/ANTs,fbudin69500/ANTs,stnava/ANTs,DaisukeMiyamoto/ANTs,acaprihan/Lungs,fbudin69500/ANTs,stnava/ANTs,fbudin69500/ANTs,fliem/ANTs,DaisukeMiyamoto/ANTs,fliem/ANTs,stnava/ANTs,stnava/ANTs,stnava/ANTs,stnava/ANTs,DaisukeMiyamoto/ANTs,fbudin69500/ANTs,DaisukeMiyamoto/ANTs,fliem/ANTs,stnava/ANTs,fliem/ANTs,acaprihan/Lungs,fbudin69500/ANTs,fliem/ANTs,dawnsong/ANTs,acaprihan/Lungs,dawnsong/ANTs,dawnsong/ANTs,fbudin69500/ANTs,DaisukeMiyamoto/ANTs,fliem/ANTs,fbudin69500/ANTs,acaprihan/Lungs,DaisukeMiyamoto/ANTs,acaprihan/Lungs