Gets the compliance mode that should be used when parsing Content-Type and
Content-Disposition parameters.
Note: Even in #GMIME_RFC_COMPLIANCE_STRICT mode, the parameter parser is fairly liberal
in what it accepts. Setting it to #GMIME_RFC_COMPLIANCE_LOOSE just makes it try harder
to deal with garbage input.
Gets the compliance mode that should be used when parsing Content-Type and Content-Disposition parameters.
Note: Even in #GMIME_RFC_COMPLIANCE_STRICT mode, the parameter parser is fairly liberal in what it accepts. Setting it to #GMIME_RFC_COMPLIANCE_LOOSE just makes it try harder to deal with garbage input.