[chirp_devel] IC-2730 Update; 2nd try

OK, here is the modified JC-2730 driver update. Back to Unix EOL chars, and many style fixes. I tried to use function calls in get_settings to make it more readable but I think it only made it worse, so I reverted back to the original all-in-line format. I have to respectfully disagree on the Information prompt; the manuals either do not mention these issues, or are very confusing. Issue #2745, items #54 and #55 both attest to this. I still can't get the cpep8.py test to run under windows... import errors.