Fix Regexp for cgminer

Was (2 spaces REQUIRED after the number of Mh/s, really?)
    (r"\(\d+s\):(\d+)\.?(\d*) .* Mh/s", lambda match:
Is now (surplus spaces removed, extra text between number and unit might be an error that should be mentioned in the Console):
    (r"\(avg\):(\d+)\.?(\d*)Mh/s", lambda match: