Add witx crate, to parse and validate witx#90

Merged

sunfishcode merged 7 commits intomasterfrom pch/add_witx_frontend

Sep 13, 2019

Commits on Sep 12, 2019

import witx-frontend crate
Pat Hickey
committed
witx-frontend: add test that wasi_unstable.witx validates
Pat Hickey
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witx-frontend: better error reporting
Pat Hickey
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witx-frontend: add witx-specific pointer and constpointer constructions
Pat Hickey
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wasi_unstable: fix syntax of preopentype_t
Pat Hickey
committed

Commits on Sep 13, 2019

witx-frontend: add LICENSE file, fix repo capitalization
Pat Hickey
committed
rename witx-frontend to witx
Pat Hickey
committed