#1 adebug: new disassembly option

[Benjamin Gandon]

Most of the time, it's more relevant to display "bhi"
instead of "bcc" and "blo" instead of "bcc", because
testing the Carry bit for itself is very rare. Indeed,
most of these branchements are based on arrithmetic
results.

I suggest we add an option to choose which syntax to
display, and to display "bhi" and "blo" by default.