wasi: Implement more of the wasi API (#1430)

I've been used the tests from wasi-sdk to get started:
https://github.com/WebAssembly/wasi-sdk/tree/master/tests

All these tests now pass.  Still this isn't saying much, there are still
some big missing pieces.  Started using the new serdes
(serialize/deserialze) API in uvwasi.  I think we are almost at the
point were we can look at auto-generating some of this stuff from witx
to avoid having the hand code all this marshelling stuff.

Add support for ArgumentCount::ZeroOrMore to OptionParser and also the
ability to force the end of option processing using `--`.  This allows
is to pass options through the underlying wasi program when running
wasm-interp.

1 files changed, 0 insertions, 0 deletions

diff --git a/third_party/uvwasi b/third_party/uvwasi
-Subproject b0684ea4182f5e4e11a12ab552d7ba1487ade02
+Subproject 55eff19f4c7e69ec151424a037f951e0ad006ed