Follow-up on #37: code cleanup

[GerHobbelt]

See initial report in #37 :

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DevTip: Also do global search for QiqqaOCR and pdfdraw as there are such beauties as these lingering in the codebase:

485: int SECONDS_TO_WAIT = 60; // MAKE SURE THIS NUMBER IS LARGER THAN THE NUMBER IN THE ACTUAL QiqqaOCR so that QiqqaOCR has time to finish up...!
525: int SECONDS_TO_WAIT = 210; // MAKE SURE THIS NUMBER IS LARGER THAN THE NUMBER IN THE ACTUAL QiqqaOCR so that QiqqaOCR has time to finish up...!
90: // Support windows-level error reporting - helps suppressing the errors in pdfdraw.exe and QiqqaOCR.exe
91 // https://msdn.microsoft.com/en-us/library/windows/desktop/ms680621%28v=vs.85%29.aspx

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As suggested in last comment there: remove the redundancy in the code by sending the timeout setting from Qiqqa to QiqqaOCR via ARGV.

[GerHobbelt]

See referenced commit above. Fixed. Bit hacky, but slightly better than what was, IMO. Timeout shouldn't be hardcoded anyway and more watchdog-like driven by QiqqaOCR activity, but that's for another PR.