All the libraries should be at co.rsk package.*

[fedejinich]

Currently secp256k1 library it's at org.bitcoin package, it should be at co.rsk

To change that you'll need to:

• Change org.bitcoin package
• Modify build-script/secp256k.sh
• Modify secp256k1/Makefile.am
• Modify src/main/java/Secp256k1Loader.java (not sure)