BEAUti: make Log File and Tree Log File name updated together with File Stem Name. 
BEAUti: make Log File and Tree Log File name updated together with File Stem Name. 
JifengJiang/beast-mcmc,JifengJiang/beast-mcmc,JifengJiang/beast-mcmc,JifengJiang/beast-mcmc,JifengJiang/beast-mcmc