maps add Kvs function

[xx1906]

Adds a Kvs() function to the maps sub-library.
For an invocation Kvs(m), will return the keys and values of the maps, and the values order is the keys order

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Patch Set 1:

(1 comment)

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Patch Set 1:

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Patch Set 1: Hold+1

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(1 comment)

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