Adjust parser for undefined CIGARs#1182

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valeriuo wants to merge 3 commits intosamtools:developfrom

valeriuo:cigar_string

Commits on Nov 25, 2020

Adjust parser for undefined CIGAR.
valeriuo
committed

Commits on Nov 26, 2020

Recode to use const char pointers

jmarshall
authored and
valeriuo
committed
Address code review issues.
valeriuo
committed