Ticket 539 - logconv.pl should handle microsecond timing
    
    Bug Description:  logconv.pl can not handle microsecond etimes
    
    Fix Description:  Update the regular expressions to handle the decimal point "."
    
                      Also did a little code cleanup.
    
    https://fedorahosted.org/389/ticket/539
    
    Reviewed by: nhosoi(Thanks!)
    (cherry picked from commit 8965dda8d4023ab36f0a404a874c657d78631e9d)
    (cherry picked from commit 67c5f1cd1584cd352da7b8db2520c268431d7812)