Decreased acceptable error and increased the number of iterations allowed
when attempting to bracket the desired change.
Modified the initialization of probmap_res and probmap_com to ignore
the error if the initial probmap file, the one without the _year extension,
if it isn't available making it fully optional.

Modified readProbmap to ignore the 'year' argument (previously the 'time'
argument) if it is less than 1.
Ignore the 'gluc' executable.