$ corelist -a File::Spec

File::Spec  was first released with perl 5.005
  5.00405    0.6       
  5.005      0.6       
  5.00503    0.6       
  5.00504    0.8       
  5.006      0.8       
  5.006001   0.82      
  5.006002   0.86      
  5.007003   0.83      
  5.008      0.83      
  5.008001   0.86      
  5.008002   0.86      
  5.008003   0.87      
  5.008004   0.87      
  5.008005   0.87      
  5.008006   3.01      
  5.008007   3.05      
  5.009      0.86      
  5.009001   0.87      
  5.009002   3.05 

$ ./coremodule-history.pl File::Spec

File::Spec version(s): 
    0.6 in perl 5.00405
    0.8 in perl 5.00504
    0.86 in perl 5.006002
    3.05 in perl 5.008007