Part 1 -> Table 2.1 - xs:base64, xs:Binary

Gurus,
On a very close scrunity of table 2.1 in Part 1, I observe that the
primitive datatype xs:base64Binary is wrongly put in as two separate
non-existant primitive datatypes - xs:base64 and xs:Binary.

I positively recommend this fix before PR.

regards,
Ram

-- 
Shift to the left, shift to the right!
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-Ramkumar Menon
A typical Macroprocessor