use simple <get> task to get bcel, and asm (#11)
use simple <get> task to get bcel, and asm (#11)

* use simple <get> task to get bcel, and asm

* add usetimestamp attribute, to avoid downloads when up to date

* fix typo

spotbugs/spotbugs,johnscancella/spotbugs,KengoTODA/spotbugs,KengoTODA/spotbugs,KengoTODA/spotbugs,sewe/spotbugs,johnscancella/spotbugs,KengoTODA/spotbugs,spotbugs/spotbugs,johnscancella/spotbugs,sewe/spotbugs,spotbugs/spotbugs,sewe/spotbugs,spotbugs/spotbugs,johnscancella/spotbugs,spotbugs/spotbugs,sewe/spotbugs