newSeq() named inconsistently?

[sls1005]

In fact, we also have a procedure named `newSeqUninitialized`. And if all 
procedures of the `newSeq*` series are renamed to `initSeq*`, it has to become 
`initSeqUninitialized`, which will be even more misleading, as the procedure 
doesn't initialize an uninitialized `seq`; it creates such an uninitialized 
`seq`.