[#1015] refactor resemblesOption() impl and usage:
[#1015] refactor resemblesOption() impl and usage:

* pull call to resemblesOption() into processPositionalParameter()
* pull call to parser.unmatchedOptionsArePositionalParams() out of resemblesOption()

remkop/picocli,remkop/picocli,remkop/picocli,remkop/picocli