Test CALLQ passed
Test ADD passed
Implement SAR and SUB decoder
Merge branch 'master' of github.com:dopl/bytecast-amd64

Conflicts:
	bytecast-amd64/src/edu/syr/bytecast/amd64/BytecastAmd64.java
	bytecast-amd64/src/edu/syr/bytecast/amd64/test/TestBytecastAmd64.java