Added support for passing parameter_name:value_constraint to xowiki::Package->get_parameter
- The get_parameter method can get values from query-parameters, therefore we have to validate these. - Use the new feature at several places (especially for boolean values) - Still, more places should be checked - bumped xowiki to 5.10.1d37 - bumped xotcl-core to 5.10.1d14