Allow nchar to be greater than string length in first/last#24556

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bkamins wants to merge 4 commits intoJuliaLang:masterfrom bkamins:str_firstlast

+53-25

Commits on Nov 10, 2017

allow nchar to be geater than string length in first/last without throwing an error
bkamins
committed

Commits on Nov 21, 2017

correct behavior for empty strings and add more tests
bkamins
committed

Commits on Nov 22, 2017