Support for nano seconds

[C-Bookie]

Under section 3.2.7.1 of XMLSCHEMA-2 it reads "'.' s+ (if present) represents the fractional seconds;" Implying the RegEx for XsdTimeWithoutTimezoneComponent shouldn't be restrained to millaseconds, reading as ([0-1][0-9]|2[0-4]):(0[0-9]|[1-5][0-9]):(0[0-9]|[1-5][0-9])(\.[0-9]+)? instead of ([0-1][0-9]|2[0-4]):(0[0-9]|[1-5][0-9]):(0[0-9]|[1-5][0-9])(\.[0-9]{3})?

Section 3.2.7.2 also states the fraction may not end with 0. A potential candidate may be ([0-1][0-9]|2[0-4]):(0[0-9]|[1-5][0-9]):(0[0-9]|[1-5][0-9])(\.([0-9]+[1-9])?)?